Answers for Interconnecting Cisco Networking Devices (ICND) Practice Questions -Module 3
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1. What is the most tangible benefit of wireless implementations?
	cost reduction
	increased mobility
	better productivity
	improved security
2. What method does a WLAN use to control transmissions?
	CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)
	CSMA/CD (Carrier Sense Multiple Access with Collision Detection)
	CSMA/CR (Carrier Sense Multiple Access with Collision Rejection)
	CSMA/CW (Carrier Sense Multiple Access with Collision Weighting)
3a. Occurs when radio frequency (RF) waves bounce off metal or glass surfaces.
	Absorption
	Reflection
	Scattering
3b. Occurs when RF waves are soaked up by walls.
	Absorption
	Reflection
	Scattering
3c. Occurs when RF waves strike an uneven surface and are reflected in many directions.
	Absorption
	Reflection
	Scattering
4. Which regulatory agency controls the 801.11 standard that governs WLANs?
	Wi-Fi Alliance
	IEEE
	EMA
	WISC
5. Which organization offers certification for interoperability between vendors of 802.11 products?
	Wi-Fi
	IEEE
	EMA
	WISC
6. Which three are the unlicensed bands used by WLANs? (Choose Three)
	2.4-MHz band
	900-MHz band
	2.4-GHz band
	5-GHz band
	900-GHz band
7. Which two of the 802.11 standards has the highest possible data rates? (Choose two)
	802.11
	802.11a
	802.11b
	802.11d
	802.11g
8. Which 802.11 standard transmits using the 5-Ghz band?
	802.11
	802.11a
	802.11b
	802.11d
	802.11g
9. Which is true as related to the Wi-Fi Alliance organization?
	It is a global standards organization that controls the compatibility of Wi-Fi products
	It operates only in the United States of America and ensures the compatibility of Wi-Fi products
	It is a global, nonprofit industry trade association devoted to promoting the growth and acceptance of wireless LANs
	It is a global, nonprofit industry trade association devoted to promoting the installation of wireless LANs in retail locations
10. What is a rogue AP?
	An AP that has an open WEP key
	An AP that is broadcasting its SSID
	An unsecured AP that has been placed on a WLAN
	An AP that has had a hardware failure that causes it to endlessly broadcast its SSID
11. Which three are the steps to secure a WLAN? (Choose Three)
	Encryption for providing privacy and confidentiality
	Authentication to ensure that legitimate clients and users access the network via trusted access points
	Controls transmit power to limit the AP access range to the property boundaries of the parent organization
	Protection from security risks and availability with intrusion detection and intrusion protection systems for WLANs
12. Which standard provides the strongest level of WLAN security?
	EAP
	WEP
	WPA
	802.11i/WPA2
13. What factor determines which AP a client will associate with?
	the AP with the lowest SSID
	the AP with the highest SSID
	the AP whose SSID is received first
	the AP that is received with the strongest signal
14. When using 802.11X, how is the client authenticated?
	The client is authenticated against a local database stored on the AP
	The access point forwards all network traffic to the server where it is either authenticated or blocked
	The access point encapsulates any 802.1X traffic bound for the authentication server and sends it to the server
	The client encapsulates the 802.1X authentication traffic before sending it to the AP. This causes the AP to forward it to the server
15. Which is true when comparing WPA and WPA2?
	WPA uses pre-shared keys while WPA 2 uses PSK
	WPA uses EAP authentication while WPA 2 uses 802.11X
	WPA uses a personal mode while WPA 2 uses an enterprise mode
	WPA uses TKIP/MIC encryption while WPA 2 uses AES-CCMP encryption
16a. Mobile clients connect directly without an intermediate access point
	Ad hoc mode
	Basic Service Set (BSS)
	Extended Services Set (ESS)
16b. The communication devices use a single access point for connectivity to each other or to wired network resources
	Ad hoc mode
	Basic Service Set (BSS)
	Extended Services Set (ESS)
16c.The wireless topology is two or more service sets connected by a distribution system (DS) or commonly a wired infrastructure.
	Ad hoc mode
	Basic Service Set (BSS)
	Extended Services Set (ESS)
17. What does the physical area of radio frequency coverage provided by an access point define?
	the RF service area
	the basic service area
	the ad hoc service area
	the extended services area
18. When implementing extended service areas, how much overlap is suggested?
	5 to 10 percent
	10 to 15 percent
	15 to 20 percent
	25 to 30 percent
19. What technique allows a client to communicate while moving?
	the ability to shift data rates
	the ability to vary transmit levels
	the ability to match the transmit level to the receive level
	the ability to perform error correction as the signal level changes
20. Which three are basic wireless access point parameters? (Choose Three)
	SSID
	authentication
	data exchange rates
	Transmit band selection
	RF channel with optional power
21. When implementing a WLAN, when should you use WEP?
	Only if there is an AAA server available
	When you need the increased security of WEP
	When you are planning to enable 802.11x authentication
	Only if the hardware equipment does not support WPA
22a. full feature supplicant for both wired and wireless client
	WZC
	Cisco Compatible Extension
	Cisco Secure Services Client
22b. Windows operating systems basic wireless supplicant client
	WZC
	Cisco Compatible Extension
	Cisco Secure Services Client
22c. more advance wireless client features than those of native operating system
	WZC
	Cisco Compatible Extension
	Cisco Secure Services Client
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