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Showing posts with label Practice Exam. Show all posts
Showing posts with label Practice Exam. Show all posts
Exam 5 -- 18 Question Set
Exam Source
Study Guides:
Lesson 1
Cover the theory needed for the exam, to accelerate Cisco networking career and for troubleshooting experience
* What is A Network?
* The OSI Model
* The Data Transmission Process
* The TCP/IP Model
* TCP And UDP
* Ports, Sockets and Port Numbers
* Network Topology
1. Which layer of the OSI model provides network services to processes in electronic mail and file transfer programs?
• data link
• transport
• network
• application
2. Which of the following are data link layer encapsulation details? (Choose two.)
• A header and trailer are added.
• Data is converted into packets.
• Packets are packaged into frames.
• Frames are divided into segments.
• Packets are changed into bits for Internet travel.
3. Which three features apply to LAN connections? (Choose three.)
• operate using serial interfaces
• make network connection using a hub
• limited to operation over small geographic areas
• provide part-time connectivity to remote services
• typically operate under local administrative control
• provide lower bandwidth services compared to WANs
4. Which layer of the OSI model provides connectivity and path selection between two end systems where routing occurs?
• physical layer
• data link layer
• network layer
• transport layer
5. Which term describes the process of adding headers to data as it moves down OSI layers?
• division
• encoding
• separation
• segmentation
• encapsulation
6. Refer to the following list. Choose the correct order of data encapsulation when a device sends information.
1. segments
2. bits
3. packets
4. data
5. frames
• 1 – 3 – 5 – 4 – 2
• 2 – 1 – 3 – 5 – 4
• 2 – 4 – 3 – 5 – 1
• 4 – 3 – 1 – 2 – 5
• 4 – 1 – 3 – 5 – 2
• 3 – 5 – 1 – 2 – 4
7. The central hub has malfunctioned in the network. As a result, the entire network is down. Which type of physical network topology is implemented?
• bus
• star
• ring
• mesh
8. Which of the following are factors that determine throughput? (Choose two.)
• types of passwords used on servers
• type of Layer 3 protocol used
• network topology
• width of the network cable
• number of users on the network
9. Which best describes the function of the physical layer?
• Defines the electrical and functional specifications for the link between end systems.
• Provides reliable transit of data across a physical link.
• Provides connectivity and path selection between two end systems.
• Concerned with physical addressing, network topology and media access.
10. Which of the following are ways that bandwidth is commonly measured? (Choose three.)
• GHzps
• kbps
• Mbps
• Nbps
• MHzps
• Gbps
11. Which of the following are layers of the TCP/IP model? (Choose three.)
• Application
• Physical
• Internet
• Network Access
• Presentation
12. What is the term used to describe the transport layer protocol data unit?
• bits
• packets
• segments
• frames
• data streams
13. What makes it easier for different networking vendors to design software and hardware that will interoperate?
• OSI model
• proprietary designs
• IP addressing scheme
• standard logical topologies
• standard physical topologies
14.
Refer to the exhibit. Which column shows the correct sequence of OSI model layers?
• A
• B
• C
• D
15. What is one advantage of defining network communication by the seven layers of the OSI model?
• It increases the bandwidth of a network.
• It makes networking easier to learn and understand.
• It eliminates many protocol restrictions.
• It increases the throughput of a network.
• It reduces the need for testing network connectivity.
16. Which two features apply to WAN connections? (Choose two.)
• operate using serial interfaces
• make network connection using a hub
• limited to operation over small geographic areas
• typically operate under local administrative control
• provide lower bandwidth services compared to LANs
17. A switch has failed in the network. As a result, only one segment of the network is down. Which type of physical network topology is implemented?
• bus
• ring
• star
• extended star
18.
Refer to the exhibit. Identify the devices labeled A, B, C, and D in the network physical documentation.
• A=bridge, B=switch, C=router, D=hub
• A=bridge, B=hub, C=router, D=switch
• A=bridge, B=router, C=hub, D=switch
• A=hub, B=bridge, C=router, D=switch
Study Guides:
Lesson 1
Introduction to Networking and the Networking Models
Cover the theory needed for the exam, to accelerate Cisco networking career and for troubleshooting experience
* What is A Network?
* The OSI Model
* The Data Transmission Process
* The TCP/IP Model
* TCP And UDP
* Ports, Sockets and Port Numbers
* Network Topology
1. Which layer of the OSI model provides network services to processes in electronic mail and file transfer programs?
• data link
• transport
• network
• application
2. Which of the following are data link layer encapsulation details? (Choose two.)
• A header and trailer are added.
• Data is converted into packets.
• Packets are packaged into frames.
• Frames are divided into segments.
• Packets are changed into bits for Internet travel.
3. Which three features apply to LAN connections? (Choose three.)
• operate using serial interfaces
• make network connection using a hub
• limited to operation over small geographic areas
• provide part-time connectivity to remote services
• typically operate under local administrative control
• provide lower bandwidth services compared to WANs
4. Which layer of the OSI model provides connectivity and path selection between two end systems where routing occurs?
• physical layer
• data link layer
• network layer
• transport layer
5. Which term describes the process of adding headers to data as it moves down OSI layers?
• division
• encoding
• separation
• segmentation
• encapsulation
6. Refer to the following list. Choose the correct order of data encapsulation when a device sends information.
1. segments
2. bits
3. packets
4. data
5. frames
• 1 – 3 – 5 – 4 – 2
• 2 – 1 – 3 – 5 – 4
• 2 – 4 – 3 – 5 – 1
• 4 – 3 – 1 – 2 – 5
• 4 – 1 – 3 – 5 – 2
• 3 – 5 – 1 – 2 – 4
7. The central hub has malfunctioned in the network. As a result, the entire network is down. Which type of physical network topology is implemented?
• bus
• star
• ring
• mesh
8. Which of the following are factors that determine throughput? (Choose two.)
• types of passwords used on servers
• type of Layer 3 protocol used
• network topology
• width of the network cable
• number of users on the network
9. Which best describes the function of the physical layer?
• Defines the electrical and functional specifications for the link between end systems.
• Provides reliable transit of data across a physical link.
• Provides connectivity and path selection between two end systems.
• Concerned with physical addressing, network topology and media access.
10. Which of the following are ways that bandwidth is commonly measured? (Choose three.)
• GHzps
• kbps
• Mbps
• Nbps
• MHzps
• Gbps
11. Which of the following are layers of the TCP/IP model? (Choose three.)
• Application
• Physical
• Internet
• Network Access
• Presentation
12. What is the term used to describe the transport layer protocol data unit?
• bits
• packets
• segments
• frames
• data streams
13. What makes it easier for different networking vendors to design software and hardware that will interoperate?
• OSI model
• proprietary designs
• IP addressing scheme
• standard logical topologies
• standard physical topologies
14.
Refer to the exhibit. Which column shows the correct sequence of OSI model layers?
• A
• B
• C
• D
15. What is one advantage of defining network communication by the seven layers of the OSI model?
• It increases the bandwidth of a network.
• It makes networking easier to learn and understand.
• It eliminates many protocol restrictions.
• It increases the throughput of a network.
• It reduces the need for testing network connectivity.
16. Which two features apply to WAN connections? (Choose two.)
• operate using serial interfaces
• make network connection using a hub
• limited to operation over small geographic areas
• typically operate under local administrative control
• provide lower bandwidth services compared to LANs
17. A switch has failed in the network. As a result, only one segment of the network is down. Which type of physical network topology is implemented?
• bus
• ring
• star
• extended star
18.
Refer to the exhibit. Identify the devices labeled A, B, C, and D in the network physical documentation.• A=bridge, B=switch, C=router, D=hub
• A=bridge, B=hub, C=router, D=switch
• A=bridge, B=router, C=hub, D=switch
• A=hub, B=bridge, C=router, D=switch
Exam 4 -- 16 Question Set
Exam Source
Study Guides:
* Decimal > Binary, Binary > Decimal
* Ethernet Addressing
1. Several computers in the company require new NICs. A technician has located a good price on the Internet for the purchase of these NICs. Before these NICs are purchased and installed, what details must be verified? (Choose three.)
• the MAC address on
• the NICthe size of the RAM on the NIC
• the bandwidth supported by the NIC
• the type of media supported by the NIC
• the type of network architecture supported by the NIC
2. What is the hexadecimal equivalent for the binary number 00100101?
• 15
• 20
• 25
• 30
• 37
• 40
3. Which phrases describe a byte? (Choose two.)
• a single binary digit
• +5 volts of electricity
• the value range 0 to 127
• a grouping of eight binary digits
• a single addressable data storage location
4. Which specialized equipment is used to make a physical connection from a PC to a network?
• router
• RAM
• CD ROM
• network interface card
5. What is the binary equivalent for the decimal number 248?
• 11100000
• 11110000
• 11110100
• 11111000
6. Convert the binary number 01011011 into its hexadecimal equivalent.
Select the correct answer from the list below.
• 5A
• 5b
• 5c
• 5d
• 6b
• 7a
7. What is the binary equivalent for decimal number 149?
• 10010111
• 10010101
• 10011001
• 10010111
• 10101011
• 10101101
8. In an 8 bit binary number, what is the total number of combinations of the eight bits?
• 128
• 254
• 255
• 256
• 512
• 1024
9. Which device connects a computer with a telephone line by providing modulation and demodulation of incoming and outgoing data?
• NIC
• CSU/DSU
• router
• modem
• telco switch
10. What is the binary equivalent for the decimal number 162?
• 10101010
• 10100010
• 10100100
• 10101101
• 10110000
• 10101100
11. Which of the following are popular web browsers? (Choose two.)
• Acrobat
• Internet Explorer
• Macromedia Flash
• Netscape Navigator
• Quicktime
• World Wide Web
12. Convert the Base 10 number 116 into its eight bit binary equivalent. Choose the correct answer from the following list:
• 01111010
• 01110010
• 01110100
• 01110110
• 01110111
• 01010110
13. What is the hexadecimal equivalent for the binary number 10001110?
• 22
• 67
• 142
• AE
• 8E
14. Represented as a decimal number, what is the result of the logical ANDing of binary numbers 00100011 and 11111100?
• 3
• 32
• 35
• 220
• 255
15. Convert the decimal number 231 into its binary equivalent. Select the correct answer from the list below.
• 11110010
• 11011011
• 11110110
• 11100111
• 11100101
• 11101110
16. What are three conditions that would require a network administrator to install a new NIC? (Choose three.)
• whenever a NIC is damaged
• when there is a need to provide a secondary or backup NIC
• when there is a change from copper media to wireless
• whenever operating system security patches are applied
• whenever the PC has been moved to a different location
Study Guides:
* Decimal > Binary, Binary > Decimal
* Ethernet Addressing
1. Several computers in the company require new NICs. A technician has located a good price on the Internet for the purchase of these NICs. Before these NICs are purchased and installed, what details must be verified? (Choose three.)
• the MAC address on
• the NICthe size of the RAM on the NIC
• the bandwidth supported by the NIC
• the type of media supported by the NIC
• the type of network architecture supported by the NIC
2. What is the hexadecimal equivalent for the binary number 00100101?
• 15
• 20
• 25
• 30
• 37
• 40
3. Which phrases describe a byte? (Choose two.)
• a single binary digit
• +5 volts of electricity
• the value range 0 to 127
• a grouping of eight binary digits
• a single addressable data storage location
4. Which specialized equipment is used to make a physical connection from a PC to a network?
• router
• RAM
• CD ROM
• network interface card
5. What is the binary equivalent for the decimal number 248?
• 11100000
• 11110000
• 11110100
• 11111000
6. Convert the binary number 01011011 into its hexadecimal equivalent.
Select the correct answer from the list below.
• 5A
• 5b
• 5c
• 5d
• 6b
• 7a
7. What is the binary equivalent for decimal number 149?
• 10010111
• 10010101
• 10011001
• 10010111
• 10101011
• 10101101
8. In an 8 bit binary number, what is the total number of combinations of the eight bits?
• 128
• 254
• 255
• 256
• 512
• 1024
9. Which device connects a computer with a telephone line by providing modulation and demodulation of incoming and outgoing data?
• NIC
• CSU/DSU
• router
• modem
• telco switch
10. What is the binary equivalent for the decimal number 162?
• 10101010
• 10100010
• 10100100
• 10101101
• 10110000
• 10101100
11. Which of the following are popular web browsers? (Choose two.)
• Acrobat
• Internet Explorer
• Macromedia Flash
• Netscape Navigator
• Quicktime
• World Wide Web
12. Convert the Base 10 number 116 into its eight bit binary equivalent. Choose the correct answer from the following list:
• 01111010
• 01110010
• 01110100
• 01110110
• 01110111
• 01010110
13. What is the hexadecimal equivalent for the binary number 10001110?
• 22
• 67
• 142
• AE
• 8E
14. Represented as a decimal number, what is the result of the logical ANDing of binary numbers 00100011 and 11111100?
• 3
• 32
• 35
• 220
• 255
15. Convert the decimal number 231 into its binary equivalent. Select the correct answer from the list below.
• 11110010
• 11011011
• 11110110
• 11100111
• 11100101
• 11101110
16. What are three conditions that would require a network administrator to install a new NIC? (Choose three.)
• whenever a NIC is damaged
• when there is a need to provide a secondary or backup NIC
• when there is a change from copper media to wireless
• whenever operating system security patches are applied
• whenever the PC has been moved to a different location
CCENT Final Exam 2 - 50 question set
Exam Source
Question 1: (QID=25141)
Which DHCP message is sent as a broadcast on the network?
1. DHCP Discover
2. DHCP Offer
3. DHCP Request
4. DHCP Acknowledgement
---------------------------------------------
Correct answer(s): 1
Explanation: The DHCP Discover message is sent as a broadcast on the network.
[Implement an IP addressing scheme and IP services to meet network requirements for a small branch office]
--------------------------------------------------------------------------------
Question 2: (QID=2352)
Given the following IP Address 172.45.34.1/24. What is the network and host portion?
1. Network 172.45.34 Host 1
2. Network 172 Host 45.34.1
3. Network 172.45 Host 34.1
4. This is an invalid IP Address
---------------------------------------------
Correct answer(s): 1
Explanation: 172.45.34.1/24 is the same as 172.45.34.1 255.255.255.0. So we can see from the subnet mask that the first 3 octets belong to the network portion of the IP Address and the 4th octet is the host portion.
[Implement an IP addressing scheme and IP services to meet network requirements for a small branch office]
--------------------------------------------------------------------------------
Question 3: (QID=25120)
You want to use RIPv2 as your routing protocol. Which commands will enable RIPv2 on your router?
A
router#configure terminal
router (config)#router rip version2
router(config-router)#network 10.0.0.0
router(config-router)#network 172.16.0.0
router(config-router)#^Z
B
router#router rip
router(config-router)#network 10.0.0.0
router(config-router)#network 172.16.0.0
router(config-router)#^Z
C
router#configure terminal
router(config)#router rip v2
router(config-router)#network 10.0.0.0
router(config-router)#network 172.16.0.0
router(config-router)#^Z
D
router#configure terminal
router(config)#router rip
router(config-router)#version 2
router(config-router)#network 10.0.0.0
router(config-router)#network 172.16.0.0
router(config-router)#^Z
1. A
2. B
3. C
4. D
---------------------------------------------
Correct answer(s): 4
Explanation: Only three steps are necessary to configure RIPv2:
Enable RIP with the command router rip.
Specify the version with the version 2 command
Specify each major network on which to run RIP with the network command.
[Implement a small routed network]
--------------------------------------------------------------------------------
Question 4: (QID=25125)
You want to implement port-security on your 2960 but you don’t know all of the MAC addresses. How can you still enable port-security and protect the currently attached devices?
1. switch(config-if)#switchport port-security mac-address sticky
2. switch(config-if)#switchport port-security mac-address enable
3. switch(config-if)#switchport port-security mac-address learn
4. switch(config-if)#switchport port-security mac-address dynamic
---------------------------------------------
Correct answer(s): 1
Explanation: When we use the switchport port-security mac-address sticky interface configuration command the switch looks at the the header of the first frame to determine the mac-address of the host that is currently connected to that port.
[Implement a small switched network]
--------------------------------------------------------------------------------
Question 5: (QID=25121)
How do you enable ppp on a serial interface?
1. router(config)#ppp enable
2. router(config-if)#encapsulation ppp
3. router(config-if)#ppp enable
4. router(config-if)#no encapsulation hdlc
---------------------------------------------
Correct answer(s): 2
Explanation: The encapsulation ppp interface configuration command enables ppp on the interface.
[Implement and verify WAN links]
--------------------------------------------------------------------------------
Question 6: (QID=2368)
What command do we use if we want to discover other Cisco devices on the network?
1. Discover neighbors
2. Show neighbors
3. CDP run
4. CDP enable
---------------------------------------------
Correct answer(s): 3
Explanation: To enable Cisco Discovery Protocol (CDP), use the cdp run global configuration command. To disable CDP, use the no form of this command.
no cdp run
[Implement a small switched network]
--------------------------------------------------------------------------------
Question 7: (QID=1323)
Spanning Tree is used in a switched network to:
1. Create a loop-free switched network
2. Manage a switched network
3. Avoid collisions on the switched network
4. Route between VLAN’s
---------------------------------------------
Correct answer(s): 1
Explanation: Spanning Tree is a technology that allows bridges to communicate with each other to discover physical loops in the network. The protocol then specifies an algorithm that bridges use to create a loop-free logical topology.
[Implement a small switched network]
--------------------------------------------------------------------------------
Question 8: (QID=3620)
What switching method is described by the following:
"The switch receives the entire frame and calculates a CRC. This method has high latency because of this behaviour."
1. Cut-Through
2. Cisco Express Forwarding
3. Fragment-Free
4. Store-and-Forward
---------------------------------------------
Correct answer(s): 4
Explanation: The Store-and-Forward switching mode receives the entire frame before beginning the switching process. When it receives the complete frame, the switch examines it for the source and destination addresses and any errors it may contain, and then it possibly applies any special filters created by the network administrator to modify the default behaviour. If the switch observes any errors in the frame, it is discarded, preventing errored frames from consuming bandwidth on the destination segment.
[Implement a small switched network]
--------------------------------------------------------------------------------
Question 9: (QID=2365)
What command is used during an IOS upgrade to place the IOS image on the router?
1. Show version
2. Copy TFTP: Flash:
3. Copy TFTP: RAM:
4. Copy running-config startup-config
---------------------------------------------
Correct answer(s): 2
Explanation: Router Memory Commands
[Implement a small routed network]
--------------------------------------------------------------------------------
Question 10: (QID=2380)
Which command do we use to move from interface configuration mode to global configuration mode without exiting configuration mode?
1. Disable
2. Logout
3. End
4. Exit
---------------------------------------------
Correct answer(s): 4
Explanation: Click here for more information.
[Implement a small switched network]
--------------------------------------------------------------------------------
Question 11: (QID=25131)
In 802.11b, how many non-overlapping channels are available?
1. 1
2. 3
3. 5
4. 7
5. 11
---------------------------------------------
Correct answer(s): 2
Explanation: 802.11b has 3 non-overlapping channels, channel 1, 6 and 11
[Explain and select the appropriate administrative tasks required for a WLAN]
--------------------------------------------------------------------------------
Question 12: (QID=2999)
What command do we use if we want to see the output of our debugs during our session?
1. Show debug all
2. u all
3. Terminal monitor
4. Show all debug
---------------------------------------------
Correct answer(s): 3
Explanation: The terminal monitor command in EXEC mode will display all debug outputs and system error messages for the current terminal and session.
[Implement a small switched network]
--------------------------------------------------------------------------------
Question 13: (QID=2996)
You have lost telnet access to your switch which is located on-site. When trying to access the switch via the console port we are unable to get a connection going. Our terminal emulation program settings are: 9600 baud, 8N1, no flow-control. What could be the cause of the problem?
1. We are using a cross-over cable
2. We are using a roll-over cable
3. Our terminal emulation program is not configured correctly
4. The operating system on our PC/laptop is not compatible with Cisco
---------------------------------------------
Correct answer(s): 1
Explanation: In order to use the console port on a router we need to configure our Terminal Emulation program (Hyper Terminal, TerraTerm Pro, …) with the following parameters:
Baud rate: 9600
Data bits:8
Parity: none
Stop bits: 1
Flow control: none
The cable type we use is a cross-over cable. [Implement a small switched network]
--------------------------------------------------------------------------------
Question 14: (QID=25139)
What can we use to detect an attack that has a specific packet pattern?
1. Firewall
2. IPS
3. Anti-virus
4. URL filtering
5. DMZ
---------------------------------------------
Correct answer(s): 2
Explanation: An IPS, Intrusion Prevention System or IDS, Intrusion Detection System, is used to detect/prevent attacks that have a distinctive packet pattern.
[Identify security threats to a network and describe general methods to mitigate those threats]
--------------------------------------------------------------------------------
Question 15: (QID=1324)
According to the IEEE 802.3 standard, Ethernet can run on what type of media? [Select all that apply]
1. 10BaseF
2. 100BaseTX
3. 1000BaseF
4. 10Base5
5. 10Base4
---------------------------------------------
Correct answer(s): 1 4
Explanation: 10BaseT - Ethernet over Twisted Pair Media
10BaseF - Ethernet over Fiber Media
10Base2 - Ethernet over Thin Coaxial Media
10Base5 - Ethernet over Thick Coaxial Media
[Implement a small switched network]
--------------------------------------------------------------------------------
Question 16: (QID=25127)
Which of the following encourages the interoperability of wireless products?
1. IEEE
2. FCC
3. Wi-Fi alliance
4. ITU-R
---------------------------------------------
Correct answer(s): 3
Explanation: The Wi-Fi alliance encourages the interoperability of wireless products using their Wi-Fi certified program.
[Explain and select the appropriate administrative tasks required for a WLAN]
--------------------------------------------------------------------------------
Question 17: (QID=2383)
Which of the following describes the correct order when a router is powered on?
1. Locate the IOS image, hardware is initialized, load configuration file, decompress the IOS image
2. Load configuration file, hardware is initialized, locate the IOS image, decompress the IOS image
3. Locate the IOS image, decompress the IOS image, hardware is initialized, load configuration file
4. Hardware is initialized, locate the IOS image, decompress the IOS image, load configuration file
---------------------------------------------
Correct answer(s): 4
Explanation: The boot sequence of a Cisco router is as follows:
ROM Monitor is the first to start and together with the BOOTSTRAP the following functions are performed:
Power-on register settings are configured
NVRAM and DRAM is tested
Hardware is initialized
Software structures are initialized
ROMmon looks for the IOS image in the flash
Once the IOS image is located the router decompresses it and loads it into DRAM. The IOS itself performs the following functions:
recognition of interfaces and other hardware
setting up proper data structures
allocating buffers
loading the configuration file from NVRAM to RAM
[Implement a small routed network]
--------------------------------------------------------------------------------
Question 18: (QID=3680)
When our information is travelling down the OSI model what name do we give it when it reaches layer 3?
1. Frames
2. Segments
3. Bits
4. Packets
5. Data
---------------------------------------------
Correct answer(s): 4
Explanation: When user data travels through the OSI layers each layer adds its own information to the data. User data is called ‘Data’ at the application, presentation and session layer, when it moves through the transport layer it is called ‘Segments’. Packets can be found at the network layer of the OSI model. At layer 2 or Datalink layer we are talking about ‘Frames’ that will be put on the wire at the physical layer in the form of ‘Bits’.
[Describe the operation of data networks]
--------------------------------------------------------------------------------
Question 19: (QID=25135)
Which of the following are parts of a socket?
1. IP address
2. Transport protocol
3. Sequence number
4. Port number
---------------------------------------------
Correct answer(s): 1 2 4
Explanation: A socket has three parts:
IP Address
Transport protocol (TCP or UDP)
Port number
[Describe the operation of data networks]
--------------------------------------------------------------------------------
Question 20: (QID=3677)
What protocol is used to resolve MAC Addresses to a known IP Address?
1. ICMP
2. RARP
3. IGMP
4. ARP
---------------------------------------------
Correct answer(s): 4
Explanation: A host that wants to communicate with another host of which the IP Address is known will send out an ARP request to discover the MAC Address.
[Implement an IP addressing scheme and IP services to meet network requirements for a small branch office]
--------------------------------------------------------------------------------
Question 21: (QID=2338)
What type of connection do you recommended for the following scenario: The remote sites need fast downloads while their uploads to the head office can be slower, cost has to be taken into account.
1. ATM
2. ISDN
3. Frame-Relay
4. ADSL
---------------------------------------------
Correct answer(s): 4
Explanation: Asymmetric Digital Subscriber Line. One of four DSL technologies. ADSL is designed to deliver more bandwidth downstream (from the central office to the customer site) than upstream. Downstream rates range from 1.5 to 9 Mbps, whereas upstream bandwidth ranges from 16 to 640 kbps. ADSL transmissions work at distances up to 18,000 feet (5,488 meters) over a single copper twisted pair.
[Describe the operation of data networks]
--------------------------------------------------------------------------------
Question 22: (QID=3006)
One of the software engineers in the company wants to test a new application. When he connects the PC to a free port on the switch he does not get a link light. When he temporarily connects the PC to a different port there is a link light. What is the most likely cause of this problem?
1. The NIC in the PC is 100Mb and the switch port is configured for 10MB
2. All the switch ports are faulty
3. The application is not working properly
4. The cable is faulty
---------------------------------------------
Correct answer(s): 1
Explanation: Because there is a speed mismatch between the PC and the switch port a link will not be established.
[Implement a small switched network]
--------------------------------------------------------------------------------
Question 23: (QID=2376)
We want to configure a password in order to secure the Privileged EXEC mode? Which of the following are commands we can use?
1. Password enable password
2. Enable password password
3. Secret Password password
4. Enable Secret password
---------------------------------------------
Correct answer(s): 2 4
Explanation: To set a local password to control access to various privilege levels, use the enable password command in global configuration mode. To specify an additional layer of security over the enable password command, use the enable secret command in global configuration mode.
[Implement a small routed network]
--------------------------------------------------------------------------------
Question 24: (QID=2373)
We want to know which routing protocols are active on the router. Which command do we use?
1. Show IP Protocols
2. Show IP Routing Protocols
3. Show Active Protocols
4. Show IP Active Protocols
---------------------------------------------
Correct answer(s): 1
Explanation: To display the parameters and current state of the active routing protocol process, use the show ip protocols command in privileged EXEC mode.
[Implement a small routed network]
--------------------------------------------------------------------------------
Question 25: (QID=3611)
Users complain that they are not able access resources at the head office. You ping a few hosts on the head office LAN and the responses are all unsuccessful. What would be the next step you do to locate the problem?
1. Use the trace route utility
2. Reboot the router
3. Clear the routing table
4. Replace the faulty router
---------------------------------------------
Correct answer(s): 1
Explanation: When we use the trace route utility to one of the IP Addresses we pinged we will find out at which hop the problem lies. We then can continue our troubleshooting from that point.
[Implement a small routed network]
--------------------------------------------------------------------------------
Question 26: (QID=2988)
Which of the following commands would you use to troubleshoot a routing problem?
1. Show version
2. Show IP route
3. Show IP interface brief
4. Ping
5. Show users
6. Traceroute
7. Show hosts
8. Show history
---------------------------------------------
Correct answer(s): 2 4 6
Explanation: When troubleshooting a routing issue we usually start by ‘pinging’ a host on the remote network we try to reach. If we don’t get a response back we check the routing table to see if we have a route to the remote network. If there is a route we do a ‘traceroute’ to the remote network to find out at which hop the possible cause of the problem might lie.
Understanding the Ping and Traceroute Commands Troubleshooting Tools
[Implement a small routed network]
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Question 27: (QID=2989)
What command do we use to show us all the RIP entries in the routing table but no other routes?
1. Show ip route
2. Show ip rip route
3. Show rip route
4. Show ip route rip
---------------------------------------------
Correct answer(s): 4
Explanation: The show ip route command can be ‘extended’ with the name of the routing protocol running on the router. Adding the name of the routing protocol displays only entries of that protocol in the routing table.
[Implement a small routed network]
--------------------------------------------------------------------------------
Question 28: (QID=25132)
Which of the following wireless parameters has to be the same on both the client and AP?
1. SSID
2. ESS
3. radio power setting
4. BSS
---------------------------------------------
Correct answer(s): 1
Explanation: In order to get an association with the AP the SSID, Service Set Identifier, has to be same on the AP and wireless client.
[Explain and select the appropriate administrative tasks required for a WLAN]
--------------------------------------------------------------------------------
Question 29: (QID=3683)
Look at the network topology in the exhibit. How many collision domains are there?
1. 1
2. 2
3. 3
4. 4
5. 5
6. 6
---------------------------------------------
Correct answer(s): 5
Explanation: A Collision Domain is defined as all of the Ethernet segments between a pair of bridges or other layer 2 devices.
[Implement a small switched network]
--------------------------------------------------------------------------------
Question 30: (QID=2367)
After making configuration changes, you want to save them. What command do you use? [Select best answer]
1. Save config
2. write memory
3. Copy startup-config running-config
4. Copy running-config startup-config
---------------------------------------------
Correct answer(s): 4
Explanation: Copy running-config startup-config will save your changes to NVRAM. Although write memory will do the same thing it is better to use the copy command.
[Implement a small switched network]
--------------------------------------------------------------------------------
Question 31: (QID=1295)
RIP Version 2 uses which multicast address to update its routing tables.
1. 224.0.0.10
2. 224.0.0.5
3. 224.0.0.1
4. 224.0.0.9
---------------------------------------------
Correct answer(s): 4
Explanation: More information about RIP version 2 can be found at RIP Version 2 RFC 2453. The other multicast addresses are used by different routing protocols (EIGRP, OSPF).
[Implement a small routed network]
--------------------------------------------------------------------------------
Question 32: (QID=25146)
Which proprietary Cisco field is added to the HDLC standard frame?
1. Type
2. Flag
3. Destination
4. Control
---------------------------------------------
Correct answer(s): 1
Explanation: Cisco added a type field to the HDLC standard frame to make it Cisco proprietary.
[Implement and verify WAN links]
--------------------------------------------------------------------------------
Question 33: (QID=2377)
What command do we use to show us a summary of the all the interfaces on a router?
1. Show IP interface brief
2. Show interfaces all
3. Show IP interface detail
4. Show interfaces brief
---------------------------------------------
Correct answer(s): 1
Explanation: The show ip interface brief command will give you all the interfaces of the router and their status, IP Address, etc… This command can be useful troubleshooting tool if you quickly want to view the interface details.
click here for sample output of this command.
[Implement a small routed network]
--------------------------------------------------------------------------------
Question 34: (QID=3623)
Which switching method will store the first 64 bytes of the packet?
1. Store-and-Forward
2. Cut-Through
3. Cisco Express Forwarding
4. Fragment-Free
---------------------------------------------
Correct answer(s): 4
Explanation: A less common method is fragment-free. It works like cut-through but stores the first 64 bytes of the packet before sending it on. The reason for this is that most errors and all collisions occur during the initial 64 bytes of a packet.
[Implement a small switched network]
--------------------------------------------------------------------------------
Question 35: (QID=2358)
When implementing a switched network we have to make sure that the following is running?
1. VTP Pruning
2. IGMP
3. A routing protocol
4. Spanning Tree
---------------------------------------------
Correct answer(s): 4
Explanation: Spanning tree will provide a loop free switched environment.
[Implement a small switched network]
--------------------------------------------------------------------------------
Question 36: (QID=3624)
Which port does TFTP use?
1. 53
2. 21
3. 69
4. 20
---------------------------------------------
Correct answer(s): 3
Explanation: TFPT uses port 69. Well-known Port Numbers
[Describe the operation of data networks]
--------------------------------------------------------------------------------
Question 37: (QID=1285)
What is the administrative distance of the following Static Route:
IP Route 192.168.3.0 255.255.255.0 Serial0/1
1. 1
2. 110
3. 0
4. 255
5. 170
---------------------------------------------
Correct answer(s): 3
Explanation: Static routes using an exit interface have an administrative distance of 0. Administrative Distance.
[Implement a small routed network]
--------------------------------------------------------------------------------
Question 38: (QID=25129)
Which two modes exist in a wireless network?
1. Ad-hoc mode
2. Peer-to-peer mode
3. Shared mode
4. Infrastructure mode
---------------------------------------------
Correct answer(s): 1 4
Explanation: Wireless networks operate either in Ad-Hoc mode or Infrastructure mode.
[Explain and select the appropriate administrative tasks required for a WLAN]
--------------------------------------------------------------------------------
Question 39: (QID=3631)
In which of the following configurations would you use a crossover cable?
1. Host to switch
2. Switch to router
3. Host to router
4. Hub to Switch
5. Hosts to hub
---------------------------------------------
Correct answer(s): 3 4
Explanation: Crossover cables can be used in the following situations:
to connect 2 hosts together
to connect 2 switches or hubs
to connect a router to a host
Modern switches come with MDIX ports but the speed and duplex setting must remain on auto.
[Implement a small switched network]
--------------------------------------------------------------------------------
Question 40: (QID=3694)
We need a minimum of 2500 hosts on each of the subnets. Our network address is 10.0.0.0/8. What is the subnet mask?
1. 255.255.224.0
2. 255.255.248.0
3. 255.255.240.0
4. 255.255.192.0
---------------------------------------------
Correct answer(s): 3
Explanation: To provide 2500 hosts on each subnet we need 12 bits available for host addressing.
Following the rules: 2^12 – 2 = 4096 – 2 = 4094 possible hosts on each subnet. Now we have 12 bits available for the subnet mask or in binary 1111 1111.1111 1111.1111 0000. The first 8 bits are from the default subnet mask of the network, convert the previous into decimal and it gives us 255.255.240.0 or /20.
[Implement an IP addressing scheme and IP services to meet network requirements for a small branch office]
--------------------------------------------------------------------------------
Question 41: (QID=2974)
We want to see a summary of the VLANs configured on our Catalyst 2960 switch. What command do we use?
1. Show vlan
2. Show vlan summary
3. Show vlan detail
4. Show vlan brief
---------------------------------------------
Correct answer(s): 4
Explanation: The show vlan brief command displays one line for each of the VLANs configured on the switch. The line contains the VLAN name, status and port membership.
[Implement a small switched network]
--------------------------------------------------------------------------------
Question 42: (QID=3695)
Given the following network 172.16.1.0/26. How many hosts do we have available on each of the subnets?
1. 62
2. 4096
3. 64
4. 128
---------------------------------------------
Correct answer(s): 1
Explanation: /26 or 255.255.255.192 leaves us 6 bits for possible hosts on each subnet. Following the rule for hosts 2^n -2 = available hosts, 2^6 – 2 = 64 – 2 = 62 hosts. The -2 is to deduct the network address and the broadcast address of the subnet.
[Implement an IP addressing scheme and IP services to meet network requirements for a small branch office]
--------------------------------------------------------------------------------
Question 43: (QID=1481)
We need 30 hosts on each of the subnets we create from the following network 192.168.3.0/24. What is the correct subnet mask?
1. 255.255.0.0
2. 255.255.255.0
3. 255.255.252.0
4. 255.255.255.224
---------------------------------------------
Correct answer(s): 4
Explanation: We need 30 hosts on each subnet and in order to accommodate those we need 5 bits of the last octet to be allocated to hosts 2^5 -2 = 30. This leaves us 3 bits for the available subnets 2^3 = 8 subnets. In binary that becomes 111, first 3 bits for the subnet or 224 and the remaining 5 positions for the hosts on each subnet.
[Implement an IP addressing scheme and IP services to meet network requirements for a small branch office]
--------------------------------------------------------------------------------
Question 44: (QID=1281)
RFC1918 specifies the allocation of IP Addresses for Private Internetworks. What are they?
1. 10.0.0.0 - 10.255.255.255
2. 192.168.0.0 - 192.168.255.255
3. 172.16.0.0 - 172.32.0.0
4. 172.16.0.0 – 172.31.255.255
5. 192.169.0.0 - 192.169.255.255
---------------------------------------------
Correct answer(s): 1 2 4
Explanation: 10.0.0.0, 172.16.0.0 – 172.31.255.255 and 192.168.0.0 are the IP Address ranges that must be used in private internetworks. These address ranges are not routed on the internet. To find out more about this: RFC1918.
[Implement an IP addressing scheme and IP services to meet network requirements for a small branch office]
--------------------------------------------------------------------------------
Question 45: (QID=25130)
When we have more than one AP in our infrastructure mode it is called?
1. BSS
2. ESS
3. CSS
4. EBSS
---------------------------------------------
Correct answer(s): 2
Explanation: A extended service set or ESS is created when we use more than one AP with overlap in infrastructure mode.
[Explain and select the appropriate administrative tasks required for a WLAN]
--------------------------------------------------------------------------------
Question 46: (QID=3614)
We notice a huge number of FCS errors on one of the switch ports that is running in full-duplex mode. What could be the cause of this?
1. Faulty switch port
2. Faulty cable
3. It is normal to have FCS errors in full-duplex mode
4. The switch is running out of memory
5. Software/hardware issues with the NIC
---------------------------------------------
Correct answer(s): 1 2 5
Explanation: In full-duplex mode the collision counter is not active. If the FCS, CRC errors increment then the most likely cause is a duplex mismatch. Other causes can be a faulty cable, a faulty switch port or hardware/software issues with the NIC.
[Implement a small switched network]
--------------------------------------------------------------------------------
Question 47: (QID=2970)
We have acquired a new Catalyst 3550 switch with Enhanced IOS image. What command allows us to remotely manage that switch using Cisco’s defaults?
A) Switch(config)#interface vlan1
Switch(config-if)#ip address 10.1.1.5 255.255.255.0
B) Switch(config)#interface fastethernet0/1
Switch(config-if)#ip address 10.1.1.5 255.255.255.0
C) Switch(config)#interface vlan1
Switch(config-vlan)#ip address 10.1.1.5 255.255.255.0
D) Switch(config)#interface ip 10.1.1.5 255.255.255.0
1. A
2. B
3. C
4. D
---------------------------------------------
Correct answer(s): 1
Explanation: We assign an ip address to the default management VLAN 1 using interface configuration mode. By default the management VLAN is 1 but it can be any VLAN between 1 to 1001.
[Implement a small switched network]
--------------------------------------------------------------------------------
Question 48: (QID=2369)
We want to try a new IOS release but we don’t have enough space on our Flash memory to hold both IOS’s. What needs to be done to use the new image?
1. Add the following line to the configuration: no boot system flash [filename]
2. Add the following line to the configuration: boot system tftp [filename] [ip address]
3. Add the following line to the configuration: no boot system rom
4. This can not be done; we need to upgrade the IOS
---------------------------------------------
Correct answer(s): 2
Explanation: To specify the system image that the router loads at startup, use one of the following boot system global configuration commands. To remove the startup system image specification, use the no form of the command.
boot system file-url
no boot system file-url
boot system flash [flash-fs:][partition-number:][filename]
no boot system flash [flash-fs:][partition-number:][filename]
boot system mop filename [mac-address] [interface]
no boot system mop filename [mac-address] [interface]
boot system rom
no boot system rom
boot system {rcp | tftp | ftp} filename [ip-address]
no boot system {rcp | tftp | ftp} filename [ip-address]
no boot system
[Implement a small routed network]
--------------------------------------------------------------------------------
Question 49: (QID=1478)
What is the maximum cable length for UTP cable?
1. 185m
2. 2000m
3. 100m
4. 500m
---------------------------------------------
Correct answer(s): 3
Explanation: 10 BaseT & 100 BaseT 100m
10 Base2 185m
10 Base5 500m
10 BaseFL 2000m
[Describe the operation of data networks]
--------------------------------------------------------------------------------
Question 50: (QID=25147)
Which ppp protocol is used to test the data link connection?
1. UDP
2. Q.931
3. NCP
4. LCP
---------------------------------------------
Correct answer(s): 4
Explanation: LCP or Link Control Protocol is used in the PPP protocol suite to test the data link connection.
[Implement and verify WAN links]
Question 1: (QID=25141)
Which DHCP message is sent as a broadcast on the network?
1. DHCP Discover
2. DHCP Offer
3. DHCP Request
4. DHCP Acknowledgement
---------------------------------------------
Correct answer(s): 1
Explanation: The DHCP Discover message is sent as a broadcast on the network.
[Implement an IP addressing scheme and IP services to meet network requirements for a small branch office]
--------------------------------------------------------------------------------
Question 2: (QID=2352)
Given the following IP Address 172.45.34.1/24. What is the network and host portion?
1. Network 172.45.34 Host 1
2. Network 172 Host 45.34.1
3. Network 172.45 Host 34.1
4. This is an invalid IP Address
---------------------------------------------
Correct answer(s): 1
Explanation: 172.45.34.1/24 is the same as 172.45.34.1 255.255.255.0. So we can see from the subnet mask that the first 3 octets belong to the network portion of the IP Address and the 4th octet is the host portion.
[Implement an IP addressing scheme and IP services to meet network requirements for a small branch office]
--------------------------------------------------------------------------------
Question 3: (QID=25120)
You want to use RIPv2 as your routing protocol. Which commands will enable RIPv2 on your router?
A
router#configure terminal
router (config)#router rip version2
router(config-router)#network 10.0.0.0
router(config-router)#network 172.16.0.0
router(config-router)#^Z
B
router#router rip
router(config-router)#network 10.0.0.0
router(config-router)#network 172.16.0.0
router(config-router)#^Z
C
router#configure terminal
router(config)#router rip v2
router(config-router)#network 10.0.0.0
router(config-router)#network 172.16.0.0
router(config-router)#^Z
D
router#configure terminal
router(config)#router rip
router(config-router)#version 2
router(config-router)#network 10.0.0.0
router(config-router)#network 172.16.0.0
router(config-router)#^Z
1. A
2. B
3. C
4. D
---------------------------------------------
Correct answer(s): 4
Explanation: Only three steps are necessary to configure RIPv2:
Enable RIP with the command router rip.
Specify the version with the version 2 command
Specify each major network on which to run RIP with the network command.
[Implement a small routed network]
--------------------------------------------------------------------------------
Question 4: (QID=25125)
You want to implement port-security on your 2960 but you don’t know all of the MAC addresses. How can you still enable port-security and protect the currently attached devices?
1. switch(config-if)#switchport port-security mac-address sticky
2. switch(config-if)#switchport port-security mac-address enable
3. switch(config-if)#switchport port-security mac-address learn
4. switch(config-if)#switchport port-security mac-address dynamic
---------------------------------------------
Correct answer(s): 1
Explanation: When we use the switchport port-security mac-address sticky interface configuration command the switch looks at the the header of the first frame to determine the mac-address of the host that is currently connected to that port.
[Implement a small switched network]
--------------------------------------------------------------------------------
Question 5: (QID=25121)
How do you enable ppp on a serial interface?
1. router(config)#ppp enable
2. router(config-if)#encapsulation ppp
3. router(config-if)#ppp enable
4. router(config-if)#no encapsulation hdlc
---------------------------------------------
Correct answer(s): 2
Explanation: The encapsulation ppp interface configuration command enables ppp on the interface.
[Implement and verify WAN links]
--------------------------------------------------------------------------------
Question 6: (QID=2368)
What command do we use if we want to discover other Cisco devices on the network?
1. Discover neighbors
2. Show neighbors
3. CDP run
4. CDP enable
---------------------------------------------
Correct answer(s): 3
Explanation: To enable Cisco Discovery Protocol (CDP), use the cdp run global configuration command. To disable CDP, use the no form of this command.
no cdp run
[Implement a small switched network]
--------------------------------------------------------------------------------
Question 7: (QID=1323)
Spanning Tree is used in a switched network to:
1. Create a loop-free switched network
2. Manage a switched network
3. Avoid collisions on the switched network
4. Route between VLAN’s
---------------------------------------------
Correct answer(s): 1
Explanation: Spanning Tree is a technology that allows bridges to communicate with each other to discover physical loops in the network. The protocol then specifies an algorithm that bridges use to create a loop-free logical topology.
[Implement a small switched network]
--------------------------------------------------------------------------------
Question 8: (QID=3620)
What switching method is described by the following:
"The switch receives the entire frame and calculates a CRC. This method has high latency because of this behaviour."
1. Cut-Through
2. Cisco Express Forwarding
3. Fragment-Free
4. Store-and-Forward
---------------------------------------------
Correct answer(s): 4
Explanation: The Store-and-Forward switching mode receives the entire frame before beginning the switching process. When it receives the complete frame, the switch examines it for the source and destination addresses and any errors it may contain, and then it possibly applies any special filters created by the network administrator to modify the default behaviour. If the switch observes any errors in the frame, it is discarded, preventing errored frames from consuming bandwidth on the destination segment.
[Implement a small switched network]
--------------------------------------------------------------------------------
Question 9: (QID=2365)
What command is used during an IOS upgrade to place the IOS image on the router?
1. Show version
2. Copy TFTP: Flash:
3. Copy TFTP: RAM:
4. Copy running-config startup-config
---------------------------------------------
Correct answer(s): 2
Explanation: Router Memory Commands
[Implement a small routed network]
--------------------------------------------------------------------------------
Question 10: (QID=2380)
Which command do we use to move from interface configuration mode to global configuration mode without exiting configuration mode?
1. Disable
2. Logout
3. End
4. Exit
---------------------------------------------
Correct answer(s): 4
Explanation: Click here for more information.
[Implement a small switched network]
--------------------------------------------------------------------------------
Question 11: (QID=25131)
In 802.11b, how many non-overlapping channels are available?
1. 1
2. 3
3. 5
4. 7
5. 11
---------------------------------------------
Correct answer(s): 2
Explanation: 802.11b has 3 non-overlapping channels, channel 1, 6 and 11
[Explain and select the appropriate administrative tasks required for a WLAN]
--------------------------------------------------------------------------------
Question 12: (QID=2999)
What command do we use if we want to see the output of our debugs during our session?
1. Show debug all
2. u all
3. Terminal monitor
4. Show all debug
---------------------------------------------
Correct answer(s): 3
Explanation: The terminal monitor command in EXEC mode will display all debug outputs and system error messages for the current terminal and session.
[Implement a small switched network]
--------------------------------------------------------------------------------
Question 13: (QID=2996)
You have lost telnet access to your switch which is located on-site. When trying to access the switch via the console port we are unable to get a connection going. Our terminal emulation program settings are: 9600 baud, 8N1, no flow-control. What could be the cause of the problem?
1. We are using a cross-over cable
2. We are using a roll-over cable
3. Our terminal emulation program is not configured correctly
4. The operating system on our PC/laptop is not compatible with Cisco
---------------------------------------------
Correct answer(s): 1
Explanation: In order to use the console port on a router we need to configure our Terminal Emulation program (Hyper Terminal, TerraTerm Pro, …) with the following parameters:
Baud rate: 9600
Data bits:8
Parity: none
Stop bits: 1
Flow control: none
The cable type we use is a cross-over cable. [Implement a small switched network]
--------------------------------------------------------------------------------
Question 14: (QID=25139)
What can we use to detect an attack that has a specific packet pattern?
1. Firewall
2. IPS
3. Anti-virus
4. URL filtering
5. DMZ
---------------------------------------------
Correct answer(s): 2
Explanation: An IPS, Intrusion Prevention System or IDS, Intrusion Detection System, is used to detect/prevent attacks that have a distinctive packet pattern.
[Identify security threats to a network and describe general methods to mitigate those threats]
--------------------------------------------------------------------------------
Question 15: (QID=1324)
According to the IEEE 802.3 standard, Ethernet can run on what type of media? [Select all that apply]
1. 10BaseF
2. 100BaseTX
3. 1000BaseF
4. 10Base5
5. 10Base4
---------------------------------------------
Correct answer(s): 1 4
Explanation: 10BaseT - Ethernet over Twisted Pair Media
10BaseF - Ethernet over Fiber Media
10Base2 - Ethernet over Thin Coaxial Media
10Base5 - Ethernet over Thick Coaxial Media
[Implement a small switched network]
--------------------------------------------------------------------------------
Question 16: (QID=25127)
Which of the following encourages the interoperability of wireless products?
1. IEEE
2. FCC
3. Wi-Fi alliance
4. ITU-R
---------------------------------------------
Correct answer(s): 3
Explanation: The Wi-Fi alliance encourages the interoperability of wireless products using their Wi-Fi certified program.
[Explain and select the appropriate administrative tasks required for a WLAN]
--------------------------------------------------------------------------------
Question 17: (QID=2383)
Which of the following describes the correct order when a router is powered on?
1. Locate the IOS image, hardware is initialized, load configuration file, decompress the IOS image
2. Load configuration file, hardware is initialized, locate the IOS image, decompress the IOS image
3. Locate the IOS image, decompress the IOS image, hardware is initialized, load configuration file
4. Hardware is initialized, locate the IOS image, decompress the IOS image, load configuration file
---------------------------------------------
Correct answer(s): 4
Explanation: The boot sequence of a Cisco router is as follows:
ROM Monitor is the first to start and together with the BOOTSTRAP the following functions are performed:
Power-on register settings are configured
NVRAM and DRAM is tested
Hardware is initialized
Software structures are initialized
ROMmon looks for the IOS image in the flash
Once the IOS image is located the router decompresses it and loads it into DRAM. The IOS itself performs the following functions:
recognition of interfaces and other hardware
setting up proper data structures
allocating buffers
loading the configuration file from NVRAM to RAM
[Implement a small routed network]
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Question 18: (QID=3680)
When our information is travelling down the OSI model what name do we give it when it reaches layer 3?
1. Frames
2. Segments
3. Bits
4. Packets
5. Data
---------------------------------------------
Correct answer(s): 4
Explanation: When user data travels through the OSI layers each layer adds its own information to the data. User data is called ‘Data’ at the application, presentation and session layer, when it moves through the transport layer it is called ‘Segments’. Packets can be found at the network layer of the OSI model. At layer 2 or Datalink layer we are talking about ‘Frames’ that will be put on the wire at the physical layer in the form of ‘Bits’.
[Describe the operation of data networks]
--------------------------------------------------------------------------------
Question 19: (QID=25135)
Which of the following are parts of a socket?
1. IP address
2. Transport protocol
3. Sequence number
4. Port number
---------------------------------------------
Correct answer(s): 1 2 4
Explanation: A socket has three parts:
IP Address
Transport protocol (TCP or UDP)
Port number
[Describe the operation of data networks]
--------------------------------------------------------------------------------
Question 20: (QID=3677)
What protocol is used to resolve MAC Addresses to a known IP Address?
1. ICMP
2. RARP
3. IGMP
4. ARP
---------------------------------------------
Correct answer(s): 4
Explanation: A host that wants to communicate with another host of which the IP Address is known will send out an ARP request to discover the MAC Address.
[Implement an IP addressing scheme and IP services to meet network requirements for a small branch office]
--------------------------------------------------------------------------------
Question 21: (QID=2338)
What type of connection do you recommended for the following scenario: The remote sites need fast downloads while their uploads to the head office can be slower, cost has to be taken into account.
1. ATM
2. ISDN
3. Frame-Relay
4. ADSL
---------------------------------------------
Correct answer(s): 4
Explanation: Asymmetric Digital Subscriber Line. One of four DSL technologies. ADSL is designed to deliver more bandwidth downstream (from the central office to the customer site) than upstream. Downstream rates range from 1.5 to 9 Mbps, whereas upstream bandwidth ranges from 16 to 640 kbps. ADSL transmissions work at distances up to 18,000 feet (5,488 meters) over a single copper twisted pair.
[Describe the operation of data networks]
--------------------------------------------------------------------------------
Question 22: (QID=3006)
One of the software engineers in the company wants to test a new application. When he connects the PC to a free port on the switch he does not get a link light. When he temporarily connects the PC to a different port there is a link light. What is the most likely cause of this problem?
1. The NIC in the PC is 100Mb and the switch port is configured for 10MB
2. All the switch ports are faulty
3. The application is not working properly
4. The cable is faulty
---------------------------------------------
Correct answer(s): 1
Explanation: Because there is a speed mismatch between the PC and the switch port a link will not be established.
[Implement a small switched network]
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Question 23: (QID=2376)
We want to configure a password in order to secure the Privileged EXEC mode? Which of the following are commands we can use?
1. Password enable password
2. Enable password password
3. Secret Password password
4. Enable Secret password
---------------------------------------------
Correct answer(s): 2 4
Explanation: To set a local password to control access to various privilege levels, use the enable password command in global configuration mode. To specify an additional layer of security over the enable password command, use the enable secret command in global configuration mode.
[Implement a small routed network]
--------------------------------------------------------------------------------
Question 24: (QID=2373)
We want to know which routing protocols are active on the router. Which command do we use?
1. Show IP Protocols
2. Show IP Routing Protocols
3. Show Active Protocols
4. Show IP Active Protocols
---------------------------------------------
Correct answer(s): 1
Explanation: To display the parameters and current state of the active routing protocol process, use the show ip protocols command in privileged EXEC mode.
[Implement a small routed network]
--------------------------------------------------------------------------------
Question 25: (QID=3611)
Users complain that they are not able access resources at the head office. You ping a few hosts on the head office LAN and the responses are all unsuccessful. What would be the next step you do to locate the problem?
1. Use the trace route utility
2. Reboot the router
3. Clear the routing table
4. Replace the faulty router
---------------------------------------------
Correct answer(s): 1
Explanation: When we use the trace route utility to one of the IP Addresses we pinged we will find out at which hop the problem lies. We then can continue our troubleshooting from that point.
[Implement a small routed network]
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Question 26: (QID=2988)
Which of the following commands would you use to troubleshoot a routing problem?
1. Show version
2. Show IP route
3. Show IP interface brief
4. Ping
5. Show users
6. Traceroute
7. Show hosts
8. Show history
---------------------------------------------
Correct answer(s): 2 4 6
Explanation: When troubleshooting a routing issue we usually start by ‘pinging’ a host on the remote network we try to reach. If we don’t get a response back we check the routing table to see if we have a route to the remote network. If there is a route we do a ‘traceroute’ to the remote network to find out at which hop the possible cause of the problem might lie.
Understanding the Ping and Traceroute Commands Troubleshooting Tools
[Implement a small routed network]
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Question 27: (QID=2989)
What command do we use to show us all the RIP entries in the routing table but no other routes?
1. Show ip route
2. Show ip rip route
3. Show rip route
4. Show ip route rip
---------------------------------------------
Correct answer(s): 4
Explanation: The show ip route command can be ‘extended’ with the name of the routing protocol running on the router. Adding the name of the routing protocol displays only entries of that protocol in the routing table.
[Implement a small routed network]
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Question 28: (QID=25132)
Which of the following wireless parameters has to be the same on both the client and AP?
1. SSID
2. ESS
3. radio power setting
4. BSS
---------------------------------------------
Correct answer(s): 1
Explanation: In order to get an association with the AP the SSID, Service Set Identifier, has to be same on the AP and wireless client.
[Explain and select the appropriate administrative tasks required for a WLAN]
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Question 29: (QID=3683)
Look at the network topology in the exhibit. How many collision domains are there?
1. 1
2. 2
3. 3
4. 4
5. 5
6. 6
---------------------------------------------
Correct answer(s): 5
Explanation: A Collision Domain is defined as all of the Ethernet segments between a pair of bridges or other layer 2 devices.
[Implement a small switched network]
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Question 30: (QID=2367)
After making configuration changes, you want to save them. What command do you use? [Select best answer]
1. Save config
2. write memory
3. Copy startup-config running-config
4. Copy running-config startup-config
---------------------------------------------
Correct answer(s): 4
Explanation: Copy running-config startup-config will save your changes to NVRAM. Although write memory will do the same thing it is better to use the copy command.
[Implement a small switched network]
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Question 31: (QID=1295)
RIP Version 2 uses which multicast address to update its routing tables.
1. 224.0.0.10
2. 224.0.0.5
3. 224.0.0.1
4. 224.0.0.9
---------------------------------------------
Correct answer(s): 4
Explanation: More information about RIP version 2 can be found at RIP Version 2 RFC 2453. The other multicast addresses are used by different routing protocols (EIGRP, OSPF).
[Implement a small routed network]
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Question 32: (QID=25146)
Which proprietary Cisco field is added to the HDLC standard frame?
1. Type
2. Flag
3. Destination
4. Control
---------------------------------------------
Correct answer(s): 1
Explanation: Cisco added a type field to the HDLC standard frame to make it Cisco proprietary.
[Implement and verify WAN links]
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Question 33: (QID=2377)
What command do we use to show us a summary of the all the interfaces on a router?
1. Show IP interface brief
2. Show interfaces all
3. Show IP interface detail
4. Show interfaces brief
---------------------------------------------
Correct answer(s): 1
Explanation: The show ip interface brief command will give you all the interfaces of the router and their status, IP Address, etc… This command can be useful troubleshooting tool if you quickly want to view the interface details.
click here for sample output of this command.
[Implement a small routed network]
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Question 34: (QID=3623)
Which switching method will store the first 64 bytes of the packet?
1. Store-and-Forward
2. Cut-Through
3. Cisco Express Forwarding
4. Fragment-Free
---------------------------------------------
Correct answer(s): 4
Explanation: A less common method is fragment-free. It works like cut-through but stores the first 64 bytes of the packet before sending it on. The reason for this is that most errors and all collisions occur during the initial 64 bytes of a packet.
[Implement a small switched network]
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Question 35: (QID=2358)
When implementing a switched network we have to make sure that the following is running?
1. VTP Pruning
2. IGMP
3. A routing protocol
4. Spanning Tree
---------------------------------------------
Correct answer(s): 4
Explanation: Spanning tree will provide a loop free switched environment.
[Implement a small switched network]
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Question 36: (QID=3624)
Which port does TFTP use?
1. 53
2. 21
3. 69
4. 20
---------------------------------------------
Correct answer(s): 3
Explanation: TFPT uses port 69. Well-known Port Numbers
[Describe the operation of data networks]
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Question 37: (QID=1285)
What is the administrative distance of the following Static Route:
IP Route 192.168.3.0 255.255.255.0 Serial0/1
1. 1
2. 110
3. 0
4. 255
5. 170
---------------------------------------------
Correct answer(s): 3
Explanation: Static routes using an exit interface have an administrative distance of 0. Administrative Distance.
[Implement a small routed network]
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Question 38: (QID=25129)
Which two modes exist in a wireless network?
1. Ad-hoc mode
2. Peer-to-peer mode
3. Shared mode
4. Infrastructure mode
---------------------------------------------
Correct answer(s): 1 4
Explanation: Wireless networks operate either in Ad-Hoc mode or Infrastructure mode.
[Explain and select the appropriate administrative tasks required for a WLAN]
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Question 39: (QID=3631)
In which of the following configurations would you use a crossover cable?
1. Host to switch
2. Switch to router
3. Host to router
4. Hub to Switch
5. Hosts to hub
---------------------------------------------
Correct answer(s): 3 4
Explanation: Crossover cables can be used in the following situations:
to connect 2 hosts together
to connect 2 switches or hubs
to connect a router to a host
Modern switches come with MDIX ports but the speed and duplex setting must remain on auto.
[Implement a small switched network]
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Question 40: (QID=3694)
We need a minimum of 2500 hosts on each of the subnets. Our network address is 10.0.0.0/8. What is the subnet mask?
1. 255.255.224.0
2. 255.255.248.0
3. 255.255.240.0
4. 255.255.192.0
---------------------------------------------
Correct answer(s): 3
Explanation: To provide 2500 hosts on each subnet we need 12 bits available for host addressing.
Following the rules: 2^12 – 2 = 4096 – 2 = 4094 possible hosts on each subnet. Now we have 12 bits available for the subnet mask or in binary 1111 1111.1111 1111.1111 0000. The first 8 bits are from the default subnet mask of the network, convert the previous into decimal and it gives us 255.255.240.0 or /20.
[Implement an IP addressing scheme and IP services to meet network requirements for a small branch office]
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Question 41: (QID=2974)
We want to see a summary of the VLANs configured on our Catalyst 2960 switch. What command do we use?
1. Show vlan
2. Show vlan summary
3. Show vlan detail
4. Show vlan brief
---------------------------------------------
Correct answer(s): 4
Explanation: The show vlan brief command displays one line for each of the VLANs configured on the switch. The line contains the VLAN name, status and port membership.
[Implement a small switched network]
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Question 42: (QID=3695)
Given the following network 172.16.1.0/26. How many hosts do we have available on each of the subnets?
1. 62
2. 4096
3. 64
4. 128
---------------------------------------------
Correct answer(s): 1
Explanation: /26 or 255.255.255.192 leaves us 6 bits for possible hosts on each subnet. Following the rule for hosts 2^n -2 = available hosts, 2^6 – 2 = 64 – 2 = 62 hosts. The -2 is to deduct the network address and the broadcast address of the subnet.
[Implement an IP addressing scheme and IP services to meet network requirements for a small branch office]
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Question 43: (QID=1481)
We need 30 hosts on each of the subnets we create from the following network 192.168.3.0/24. What is the correct subnet mask?
1. 255.255.0.0
2. 255.255.255.0
3. 255.255.252.0
4. 255.255.255.224
---------------------------------------------
Correct answer(s): 4
Explanation: We need 30 hosts on each subnet and in order to accommodate those we need 5 bits of the last octet to be allocated to hosts 2^5 -2 = 30. This leaves us 3 bits for the available subnets 2^3 = 8 subnets. In binary that becomes 111, first 3 bits for the subnet or 224 and the remaining 5 positions for the hosts on each subnet.
[Implement an IP addressing scheme and IP services to meet network requirements for a small branch office]
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Question 44: (QID=1281)
RFC1918 specifies the allocation of IP Addresses for Private Internetworks. What are they?
1. 10.0.0.0 - 10.255.255.255
2. 192.168.0.0 - 192.168.255.255
3. 172.16.0.0 - 172.32.0.0
4. 172.16.0.0 – 172.31.255.255
5. 192.169.0.0 - 192.169.255.255
---------------------------------------------
Correct answer(s): 1 2 4
Explanation: 10.0.0.0, 172.16.0.0 – 172.31.255.255 and 192.168.0.0 are the IP Address ranges that must be used in private internetworks. These address ranges are not routed on the internet. To find out more about this: RFC1918.
[Implement an IP addressing scheme and IP services to meet network requirements for a small branch office]
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Question 45: (QID=25130)
When we have more than one AP in our infrastructure mode it is called?
1. BSS
2. ESS
3. CSS
4. EBSS
---------------------------------------------
Correct answer(s): 2
Explanation: A extended service set or ESS is created when we use more than one AP with overlap in infrastructure mode.
[Explain and select the appropriate administrative tasks required for a WLAN]
--------------------------------------------------------------------------------
Question 46: (QID=3614)
We notice a huge number of FCS errors on one of the switch ports that is running in full-duplex mode. What could be the cause of this?
1. Faulty switch port
2. Faulty cable
3. It is normal to have FCS errors in full-duplex mode
4. The switch is running out of memory
5. Software/hardware issues with the NIC
---------------------------------------------
Correct answer(s): 1 2 5
Explanation: In full-duplex mode the collision counter is not active. If the FCS, CRC errors increment then the most likely cause is a duplex mismatch. Other causes can be a faulty cable, a faulty switch port or hardware/software issues with the NIC.
[Implement a small switched network]
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Question 47: (QID=2970)
We have acquired a new Catalyst 3550 switch with Enhanced IOS image. What command allows us to remotely manage that switch using Cisco’s defaults?
A) Switch(config)#interface vlan1
Switch(config-if)#ip address 10.1.1.5 255.255.255.0
B) Switch(config)#interface fastethernet0/1
Switch(config-if)#ip address 10.1.1.5 255.255.255.0
C) Switch(config)#interface vlan1
Switch(config-vlan)#ip address 10.1.1.5 255.255.255.0
D) Switch(config)#interface ip 10.1.1.5 255.255.255.0
1. A
2. B
3. C
4. D
---------------------------------------------
Correct answer(s): 1
Explanation: We assign an ip address to the default management VLAN 1 using interface configuration mode. By default the management VLAN is 1 but it can be any VLAN between 1 to 1001.
[Implement a small switched network]
--------------------------------------------------------------------------------
Question 48: (QID=2369)
We want to try a new IOS release but we don’t have enough space on our Flash memory to hold both IOS’s. What needs to be done to use the new image?
1. Add the following line to the configuration: no boot system flash [filename]
2. Add the following line to the configuration: boot system tftp [filename] [ip address]
3. Add the following line to the configuration: no boot system rom
4. This can not be done; we need to upgrade the IOS
---------------------------------------------
Correct answer(s): 2
Explanation: To specify the system image that the router loads at startup, use one of the following boot system global configuration commands. To remove the startup system image specification, use the no form of the command.
boot system file-url
no boot system file-url
boot system flash [flash-fs:][partition-number:][filename]
no boot system flash [flash-fs:][partition-number:][filename]
boot system mop filename [mac-address] [interface]
no boot system mop filename [mac-address] [interface]
boot system rom
no boot system rom
boot system {rcp | tftp | ftp} filename [ip-address]
no boot system {rcp | tftp | ftp} filename [ip-address]
no boot system
[Implement a small routed network]
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Question 49: (QID=1478)
What is the maximum cable length for UTP cable?
1. 185m
2. 2000m
3. 100m
4. 500m
---------------------------------------------
Correct answer(s): 3
Explanation: 10 BaseT & 100 BaseT 100m
10 Base2 185m
10 Base5 500m
10 BaseFL 2000m
[Describe the operation of data networks]
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Question 50: (QID=25147)
Which ppp protocol is used to test the data link connection?
1. UDP
2. Q.931
3. NCP
4. LCP
---------------------------------------------
Correct answer(s): 4
Explanation: LCP or Link Control Protocol is used in the PPP protocol suite to test the data link connection.
[Implement and verify WAN links]
CCNA And CCENT Cisco Certification Exam Training Questions -- 10 Questions On Router Commands, Memory, And Config Storage
Study Guides:
* ROM, RAM, NVRAM, And Flash
* The Boot Process
* Setup Mode
* Configuration Files and IOS Upgrading
* The Configuration RegisterVideo Explanation
1. When a Cisco router stores its IOS image locally, where is that image kept?
A. ROM
B. Flash
C. RAM
D. NVRAM
2. Where is a router's startup configuration file kept?
A. RAM
B. ROM
C. Flash
D. NVRAM
3. Where is a router's running configuration kept?
A. RAM
B. ROM
C. NVRAM
D. Flash
4. A router will attempt to load its IOS image from what locations, and in what order?
A. Flash, TFTP Server, ROM
B. Flash, ROM, TFTP Server
C. ROM, RAM, Flash, TFTP Server
D. RAM, ROM, TFTP Server, Flash
E. TFTP Server, Flash, ROM
F. ROM, TFTP Server, RAM, Flash
5. To change the order of the correct answer to #4, what needs to be changed?
To change the configuration register value.
6. What keystroke allows you to exit Setup Mode without saving any of the configuration you've written to that point?
<Ctrl> + c
7. Examine the following configuration and identify the true statements.
R1#conf t
Enter configuration commands, one per line. End with CNTL/Z.
R1(config)#enable password CISCO
R1(config)#enable secret CCNA
A. The "t" in the first line stands for "terminal".
B. The "t" in the first line stands for "TFTP Server"
C. When prompted for an enable password on this router, the user should enter "CISCO".
D. When prompted for an enable password on this router, the user should enter "CCNA".
E. Both "CISCO" and "CCNA" will be accepted for an enable password.
F. Neither "CISCO" nor "CCNA" will be accepted for an enable password.
8. Which of the following commands displays a router's configuration register settings?
A. show interface
B. show controller
C. show config-register
D. show version
9. You've just changed a router's configuration register setting. What must be done to make the change take effect?
A. A reload, which must be done manually.
B. A reload, which will occur 60 seconds after changing that register setting.
C. Save the change to the startup configuration and do nothing else.
D. No additional action is needed; like many Cisco router commands, the change takes effect immediately.
10. Examine the following output and name the mode the router is currently in.
Basic management setup configures only enough connectivity
for management of the system, extended setup will ask you
to configure each interface on the systemWould you like to enter basic management setup? [yes/no]: y
Configuring global parameters:
Enter host name [Switch]
In setup mode
CCNA And CCENT Cisco Certification Exam Training Questions -- 10 Questions On Static Routing, Debugs, And RIP
Study Guides:
* Static Routing Theory
* Floating Static Routing
* RIP Routing Theory
* Static Routing and RIP Routing Labs1. What two commands resulted in the following output?
IP: s=172.12.123.3 (local), d=172.12.123.2 (Serial0), len 100, sending
IP: s=172.12.123.1 (Serial0), d=172.12.123.3 (Serial0), len 56, rcvd 3
IP: s=172.12.123.2 (Serial0), d=172.12.123.3 (Serial0), len 100, rcvd 3
A. debug frame lmi
B. debug packet length
C. debug ip packet
D. ping 172.12.123.1
E. ping 172.12.123.2
F. ping 172.12.123.3
2. Identify the true statements regarding the following output.
IP: s=172.12.123.3 (local), d=2.2.2.2, len 100, unroutable
IP: s=172.12.123.3 (local), d=2.2.2.2, len 100, unroutable
IP: s=172.12.123.3 (local), d=2.2.2.2, len 100, unroutable
IP: s=172.12.123.3 (local), d=2.2.2.2, len 100, unroutable
IP: s=172.12.123.3 (local), d=2.2.2.2, len 100, unroutableA. A debug command is running on the local router.
B. A debug command is not running on the local router.
C. The word unroutable indicates that the packets are not leaving the local router.
D. The command output indicates that these packets are leaving the router.
E. The word unroutable indicates that the remote interface with the IP address 2.2.2.2 is administratively shut down.
3. What command was just run on this router?
R3#
All possible debugging has been turned offundebug all
4. A valid ip route command can end with which of the following?
A. The name of the exit interface on the local router.
B. The IP address of the exit interface on the local router.
C. The IP address of the next-hop router.
D. The name of the interface on the next-hop router that should receive the packets.
5. Briefly describe a floating static route.
A floating static route is a static route with an administrative distance higher than that of the routing protocol use. In this way, the floating static route will only appear in the routing table if the dynamically learned route is lost.
6. Identify the true statements regarding the following command output.
R3#
RIP: sending update to 224.0.0.9 via Serial0 (172.12.123.3)
172.12.123.0/24 -> 0.0.0.0, metric 1, tag 0
1.1.1.1/32 -> 172.12.123.1, metric 2, tag 0
2.2.2.2/32 -> 172.12.123.2, metric 3, tag 0
3.3.3.3/32 -> 0.0.0.0, metric 16, tag 0A. The debug ip rip command is running.
B. The debug ip packet command is running.
C. The ping ip rip command was used.
D. Route poisoning is in effect.
E. Split horizon is in effect.
F. At least one of these routes is a floating static route.
G. This is a RIP version 1 update.
H. This is a RIP version 2 update.
7. Identify the true statements comparing RIP versions 1 and 2.
A. The destination address of the routing updates is the same.
B. VLSM is supported.
C. Subnet mask information is carried in the routing updates.
D. The metric used for route poisoning is the same.
8. What routing algorithm is used by RIP?
A. SPF
B. Bellman-Ford
C. Dijkstra
D. DUAL
9. A default RIP configuration sends what version(s) of routing updates?
A. Version 1 only.
B. Version 2 only.
C. Both versions 1 and 2.
D. There is no default setting; this must be manually configured.
10. A default RIP configuration accepts what version(s) of routing updates?
A. Version 1 only.
B. Version 2 only.
C. Both versions 1 and 2.
D. There is no default setting.
CCNA And CCENT Cisco Certification Exam Training Questions --10 Questions On HDLC, PPP, And Point-To-Point Connections
Video Explanation
1. Identify the correct statements regarding HDLC and PPP running on a point-to-point connection.
A. If HDLC is running on one end, HDLC must be running on the other end as well.
B. If HDLC is running on one end, the other end can run HDLC or PPP.
C. If PPP is running on one end, PPP must be running on the other end as well.
D. If PPP is running on one end, the other end can run HDLC or PPP.
2. If a point-to-point connection is physically fine but there is a timer or encapsulation mismatch issue, which of the following will appear in the output of show interface serial?
A. Serial0 is up, line protocol is up
B. Serial0 is up, line protocol is down
C. Serial0 is down, line protocol is up
D. Serial0 is down, line protocol is down
3. Which of the following cannot appear in the output ofshow interface serial?
A. Serial0 is up, line protocol is up
B. Serial0 is up, line protocol is down
C. Serial0 is down, line protocol is up
D. Serial0 is down, line protocol is down
4. Which of the following is offered by PPP but not by HDLC?
A. PAP
B. multilink capabilities
C. dialer callback
D. CHAP
5. Name both debug commands that could produce the following output.
2d04h: Se1 CHAP: O CHALLENGE id 82 len 23 from "R3"
2d04h: Se1 CHAP: I CHALLENGE id 222 len 23 from "R1"
2d04h: Se1 CHAP: O RESPONSE id 222 len 23 from "R3"
2d04h: Se1 CHAP: I RESPONSE id 82 len 23 from "R1"
2d04h: Se1 CHAP: O SUCCESS id 82 len 4
2d04h: Se1 CHAP: I SUCCESS id 222 len 4"debug ppp negotiation" and "debug ppp authentication".
The debug ppp negotiation command will give more information.
6. What is the net result of the following command?
R3(config-if)#ppp authentication chap pap
A. CHAP authentication will be attempted before PAP.
B. CHAP and PAP authentication attempts will be made at the same time.
C. If the CHAP authentication attempt results in a failed authentication, a PAP attempt will be made.
D. If the remote router isn't running CHAP, a PAP authentication attempt will be made.
E. The password for CHAP authentication has been set to "pap".
7. What protocol is sometimes referred to as the manager of a PPP connection?
Link Control Protocol (LCP)
8. PPP allows you to select one of two compression techniques. What are they?
stacker or predictor
9. Identify the true statements.
A. PAP sends a clear-text password across the WAN.
B. PAP sends a hash result across the WAN rather than a password.
C. CHAP sends a clear-text password across the WAN.
D. CHAP sends a hash result across the WAN rather than a password.
10. What is the default encapsulation for a Cisco router serial interface?
HDLC
CCNA And CCENT Cisco Certification Exam Training Questions -- 10 Questions On Frame Relay
Video Explanation
1. Your Frame Relay provider is guaranteeing you a certain amount of bandwidth that will be available to you at any given time. What acronym is used to describe that guaranteed bandwidth?
A. DE
B. CIR
C. LMI
D. BECN
E. FECN
2. A Frame Relay cloud consists of what device types?
A. Frame Relay switches acting as DCEs
B. Frame Relay switches acting as DTEs
C. Frame Relay routers acting as DCEs
D. Frame Relay routers acting as DTEs
3. Which of the following terms describes Frame Relay?
A. packet-switching
B. circuit-switching
C. relatively inexpensive when compared to other WAN connectivity methods
D. relatively expensive when compared to other WAN connectivity methods
4. What message types serve as keepalives between the DTE and DCE?
A. LMI
B. DLCI
C. DE
D. CIR
5. Short answer: What is the default encapsulation type of a Cisco router Serial interface?
HDLC
6. Short answer: When LMI Autosense is in effect, what message type(s) does the DTE send to the DCE?
When LMI Autosense is in operation, the DTE will send three LMI Status messages -- Type q933a, Type ANSI and Type CISCO. The DCE will respond with one LMI Status message. The DTE sees that Status message coming in, and from that point on only sends the LMI Status message type that matches the type it received from the DCE.
7. Short answer: When LMI Autosense is in effect, what message type(s) does the DCE then send to the DTE after receiving the message(s) referred to in question 6?
When LMI Autosense is in operation, the DTE will send three LMI Status messages -- Type q933a, Type ANSI and Type CISCO. The DCE will respond with one LMI Status message. The DTE sees that Status message coming in, and from that point on only sends the LMI Status message type that matches the type it received from the DCE.
8. What command resulted in the following output?
LMI Statistics for interface Serial0 (Frame Relay DTE) LMI TYPE = ANSI
Invalid Unnumbered info 0 Invalid Prot Disc 0
Invalid dummy Call Ref 0 Invalid Msg Type 0
Invalid Status Message 0 Invalid Lock Shift 0
Invalid Information ID 0 Invalid Report IE Len 0
Invalid Report Request 0 Invalid Keep IE Len 0
Num Status Enq. Sent 121 Num Status msgs Rcvd 94
Num Update Status Rcvd 0 Num Status Timeouts 26
A. show frame pvc
B. show frame lmi
C. show frame timeouts
D. debug frame lmi
9. What command resulted in the following output?
R1#
3d04h: Serial0(out): StEnq, myseq 49, yourseen 94, DTE down
3d04h: datagramstart = 0xE329E4, datagramsize = 14
3d04h: FR encap = 0x00010308
3d04h: 00 75 95 01 01 00 03 02 31 5E
A. show frame pvc
B. show frame lmi
C. show frame dte
D. debug frame lmi
10. Short answer: What protocol enables dynamic Frame Relay mapping?
Inverse ARP enables dynamic Frame Relay mapping. Inverse ARP is often disabled in today's networks, and this is done by running command "no frame-relay inverse-arp" at the interface level.
CCENT Practice Exam - 22 Question Set
01. Why would a network administrator configure port security on a switch?
(A) to prevent unauthorized Telnet access to a switch port
(B) to limit the number of Layer 2 broadcasts on a particular switch port
(C) to prevent unauthorized hosts from accessing the LAN
(D) to protect the IP and MAC address of the switch and associated ports
(E) to block unauthorized access to the switch management interfaces over common TCP ports
02. Which form of NAT maps multiple private IP addresses to a single registered IP address by using different ports?
(A) static NAT
(B) dynamic NAT
(C) overloading
(D) overlapping
(E) port loading
03. What should be part of a comprehensive network security plan?
(A) Allow users to develop their own approach to network security
(B) Physically secure network equipment from potential access by unauthorized individuals
(C) Encourage users to use personal information in their passwords to minimize the likelihood of passwords being forgotten
(D) Delay deployment of software patches and updates until their effect on end-user equipment is well known and widely reported
(E) Minimize network overhead by deactivating automatic antivirus client updates
04. Which of the following commands will configure a default route to any destination network not found in the routing table?
(A) Router(config)# ip default-route 0.0.0.0 255.255.255.255 s0
(B) Router(config)# ip route 0.0.0.0 255.255.255.255 s0
(C) Router(config)# ip default-route 0.0.0.0 s0
(D) Router(config)# ip route 0.0.0.0 0.0.0.0 s0
(E) Router(config)# ip route any any e0
05. For security reasons, information about RTA, including platform and IP addresses, should not be accessible from the Internet. This information should, however, be accessible to devices on the internal networks of RT A. Which command or series of commands will accomplish these objectives?
(A) RTA(config)#no cdp run
(B) RTA(config)#no cdp enable
(C) RTA(config)#interface s0/0
RTA(config-if)#no cdp run
RTA(config-if)#no cdp run
(D) RTA(config)#interface s0/0
RTA(config-if)#no cdp enable
RTA(config-if)#no cdp enable
06. What is the purpose of flow control?
(A) to ensure data is retransmitted if an acknowledgment is not received
(B) to reassemble segments in the correct order at the destination device
(C) to provide a means for the receiver to govern the amount of data sent by the sender
(D) to regulate the size of each segment
07. Host A has established a communication session with host B for the first time. What enabled R1 to forward this traffic in the appropriate direction to reach the nework to which host B is attached?
(A) DNS
(B) DHCP
(C) TCP/IP
(D) a Layer 4 protocol
(E) a routing protocol
(F) a default gateway
08. What does the "Inside Global" address represent in the configuration of NAT?
(A) the summarized address for all of the internal subnetted addresses
(B) the MAC address of the router used by inside hosts to connect to the Internet
(C) a globally unique, private IP address assigned to a host on the inside network
(D) a registered address that represents an inside host to an outside network
09. How many simultaneous Telnet sessions does a Cisco router support by default?
(A) 1
(B) 2
(C) 3
(D) 4
(E) 5
(F) 6
10. which prompt is the global configuration mode on a Cisco router identified?
(A) Router>
(B) Router#
(C) Router(config)#
(D) Router(config-if)#
(E) Router(config-line)#c
(F) Router(config-router)#
11. Host A is communicating with the server. What will be the source MAC address of the frames received by Host A from the server?
(A) the MAC address of router interface e0
(B) the MAC address of router interface e1
(C) the MAC address of the server network interface
(D) the MAC address of host A
12. Which IP address is a private address?
(A) 12.0.0.1
(B) 168.172.19.39
(C) 172.20.14.36
(D) 172.33.194.30
(E) 192.169.42.34
13. Which encryption type does WPA2 use?
(A) AES-CCMP
(B) PPK via IV
(C) PSK
(D) TKIP/MIC
14. Which of the following protocols uses both TCP and UDP ports?
(A) FTP
(B) SMTP
(C) Telnet
(D) DNS
15. Three access points have been installed and configured to cover a small office. What term defines the wireless topology?
(A) BSS
(B) IBSS
(C) ESS
(D) SSID
16. Which command is used on a Cisco router to reach the global configuration mode?
(A) Router> enable
(B) Router# router
(C) Router# setup
(D) Router# interface
(E) Router# configure terminal
17. Which command will set the default gateway to 192.168.12.1 on a Cisco switch?
(A) Switch(config)# ip default-network 192.168.12.1
(B) Switch(config)# ip route-default 192.168.12.1
(C) Switch(config)# ip default-gateway 192.168.12.1
(D) Switch(config)# ip route 192.168.12.1 0.0.0.0
18. What is the effect of using the service password-encryption command?
(A) Only the enable password will be encrypted
(B) Only the enable secret password will be encrypted
(C) Only passwords configured after the command has been entered will be encrypted
(D) It will encrypt the secret password and remove the enable secret password from the configuration
(E) It will encrypt all current and future passwords
19. What is the purpose of a default route?
(A) It is a route to be used when the routing protocol fails
(B) It is a route configured by an ISP that sends traffic into a corporate network
(C) It is a route used when a packet is destined for a remote network that is not listed in the routing table.
(D) It is a route manually configured for a specific remote network for which a routing protocol is not configured.
(E) It is used to send traffic to a stub network.
20. Workstation A must be able to telnet to switch SW-A through router RTA for management purposes. What must be configured for this connection to be successful?
(A) VLAN 1 on RTA
(B) default gateway on SW-A
(C) IP routing on SW-A
(D) cross-over cable connecting SW-A and RTA
21. At which layer of the OSI model does the protocol that provides the information displayed by the show cdp neighbors command operate?
(A) physical
(B) data link
(C) network
(D) transport
(E) application
22. Serial0/0 does not respond to a ping request from a host on the FastEthernet0/0 LAN. How can this problem be corrected?
(A) Enable the Serial 0/0 interface
(B) Correct the IP address for Serial 0/0
(C) Correct the IP address for FastEthernet 0/0
(D) Change the encapsulation type on Serial 0/0
(E) Enable autoconfiguration on the Serial 0/0 interface
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