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CCNA Wireless Questions

Instructions:

Answer 25 questions in 15 minutes.
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Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. Which IEEE committee has been sanctioned by WPA and is called WPA2?
WPA - although using the same RC4 encryption that WEP uses - provides enhancements to the WEP protocol by using dynamic keys that change constantly - as well as providing a Pre-Shared Key method of authentication.
IEEE 802.11i
Block Acknowledgments
AES-CCMP

2. A wireless client cannot connect to an 802.11b/g BSS with a b/g wireless card. The client section of the access point does not list any active WLAN clients. What is a possible reason for this?
The SSID is configured incorrectly on the client.
Three
1. Key mixing using temporal keys. 2. Per frame sequence counter. WPA uses Temporal Key Integrity Protocol (TKIP) - which includes both broadcast key rotation (dynamic keys that change) and sequencing of frames.
WPA - although using the same RC4 encryption that WEP uses - provides enhancements to the WEP protocol by using dynamic keys that change constantly - as well as providing a Pre-Shared Key method of authentication.

3. What are three basic parameters to configure on a wireless access point?
WPA2 uses AES-CCMP for encryption. WPA uses TKIP.
The three basic parameters to configure when setting up an access point are the SSID - the RF channel - and the authentication method.
Extended service set ID means that you have more than one access point and they all are set to the same SSID and all are connected together in the same VLAN or distribution system so users can roam.
AES-CCMP

4. What is the frequency range of IEEE 802.11a?
5 GHz
WEP & TKIP (WPA) use RC4 WPA2 uses AES
RADIUS Server
Changing the default SSID value and administrator password

5. Which two practices help secure the configuration utilities on wireless access points from unauthorized access?
Cordless phone interference - antenna type or orientation - and metal filing cabinet reflection of the RF signal can all give rise to connectivity issues.
54 Mbps
2.4 GHz
Changing the default SSID value and administrator password

6. Name three EAP types that allow us to use wireless LANs in enterprise networks?
PEAP - EAP-FAST - Local-EAP
Extended service set ID means that you have more than one access point and they all are set to the same SSID and all are connected together in the same VLAN or distribution system so users can roam.
WEP & TKIP (WPA) use RC4 WPA2 uses AES
WPA2 uses AES-CCMP for encryption. WPA uses TKIP.

7. Which feature of 802.11n provides MAC efficiency?
AES-CCMP
IEEE 802.11i
1. Key mixing using temporal keys. 2. Per frame sequence counter. WPA uses Temporal Key Integrity Protocol (TKIP) - which includes both broadcast key rotation (dynamic keys that change) and sequencing of frames.
Block Acknowledgments

8. Which encryption type does WPA2 use? WPA?
11Mbps
WPA2 uses AES-CCMP for encryption. WPA uses TKIP.
54 Mbps
1. Key mixing using temporal keys. 2. Per frame sequence counter. WPA uses Temporal Key Integrity Protocol (TKIP) - which includes both broadcast key rotation (dynamic keys that change) and sequencing of frames.

9. Which wireless LAN design ensures that a mobile wireless client will not lose connectivity when moving from one access point to another?
Block Acknowledgments
IEEE 802.11i
Overlapping the wireless cell coverage by at least 10%
RADIUS Server

10. What is the frequency range of IEEE 802.11b?
2.4 GHz
PEAP - EAP-FAST - Local-EAP
AES-CCMP
RC4 algorithm

11. What is the maximum data rate of IEE 902.11b?
RC4 algorithm
The three basic parameters to configure when setting up an access point are the SSID - the RF channel - and the authentication method.
2.4 GHz
11Mbps

12. You are connecting your access point and it is set to root. What does extended service set ID mean?
Extended service set ID means that you have more than one access point and they all are set to the same SSID and all are connected together in the same VLAN or distribution system so users can roam.
5 GHz
The three basic parameters to configure when setting up an access point are the SSID - the RF channel - and the authentication method.
1. Key mixing using temporal keys. 2. Per frame sequence counter. WPA uses Temporal Key Integrity Protocol (TKIP) - which includes both broadcast key rotation (dynamic keys that change) and sequencing of frames.

13. Two workers have established wireless communication directly between their wireless laptops. What type of wireless topology has been created by these employees?
Independent Basic Service Set (IBSS) is ad-hoc wireless
The three basic parameters to configure when setting up an access point are the SSID - the RF channel - and the authentication method.
5 GHz
RADIUS Server

14. How many non-overlapping channels are available with 802.11b?
Three
RADIUS Server
5 GHz
1. Key mixing using temporal keys. 2. Per frame sequence counter. WPA uses Temporal Key Integrity Protocol (TKIP) - which includes both broadcast key rotation (dynamic keys that change) and sequencing of frames.

15. You have finished physically installing an access point on the ceiling of your office. At a minimum - which parameter must be configured on the access point in order to allow a wireless client to operate on it?
SSID
The SSID is configured incorrectly on the client.
PEAP - EAP-FAST - Local-EAP
IEEE 802.11i

16. Which two features did WPA add to address the inherent weaknesses found in WEP?
WPA2 uses AES-CCMP for encryption. WPA uses TKIP.
Overlapping the wireless cell coverage by at least 10%
1. Key mixing using temporal keys. 2. Per frame sequence counter. WPA uses Temporal Key Integrity Protocol (TKIP) - which includes both broadcast key rotation (dynamic keys that change) and sequencing of frames.
Cordless phone interference - antenna type or orientation - and metal filing cabinet reflection of the RF signal can all give rise to connectivity issues.

17. Describes the wireless security standard that WPA defines?
Block Acknowledgments
RADIUS Server
1. Key mixing using temporal keys. 2. Per frame sequence counter. WPA uses Temporal Key Integrity Protocol (TKIP) - which includes both broadcast key rotation (dynamic keys that change) and sequencing of frames.
WPA - although using the same RC4 encryption that WEP uses - provides enhancements to the WEP protocol by using dynamic keys that change constantly - as well as providing a Pre-Shared Key method of authentication.

18. WPA2 uses which encryption method?
RADIUS Server
RC4 algorithm
54 Mbps
AES-CCMP

19. What is the maximum data rate of IEEE 802.11g?
RC4 algorithm
RADIUS Server
Three
54Mpbs

20. What is the frequency range of IEEE 802.11g?
11Mbps
RADIUS Server
1. Key mixing using temporal keys. 2. Per frame sequence counter. WPA uses Temporal Key Integrity Protocol (TKIP) - which includes both broadcast key rotation (dynamic keys that change) and sequencing of frames.
2.4 GHz

21. Which two wireless encryption methods are based on the RC4 encryption algorithm?
Block Acknowledgments
WEP & TKIP (WPA) use RC4 WPA2 uses AES
2.4 GHz
Three

22. What device must be on your wired network when running an enterprise EAP solution?
Overlapping the wireless cell coverage by at least 10%
2.4 GHz
RADIUS Server
Block Acknowledgments

23. A single 802.11g access point has been configured and installed in the center of a square-shaped office. A few wireless users are experiencing slow performance and drops while most users are operating at peak efficiency. What could likely be the caus
RC4 algorithm
54 Mbps
Overlapping the wireless cell coverage by at least 10%
Cordless phone interference - antenna type or orientation - and metal filing cabinet reflection of the RF signal can all give rise to connectivity issues.

24. The TKIP encryption is based on the...
AES-CCMP
1. Key mixing using temporal keys. 2. Per frame sequence counter. WPA uses Temporal Key Integrity Protocol (TKIP) - which includes both broadcast key rotation (dynamic keys that change) and sequencing of frames.
54Mpbs
RC4 algorithm

25. What is the maximum data rate for the 802.11a standard?
Changing the default SSID value and administrator password
54 Mbps
WPA - although using the same RC4 encryption that WEP uses - provides enhancements to the WEP protocol by using dynamic keys that change constantly - as well as providing a Pre-Shared Key method of authentication.
RADIUS Server