PW0-205 Wireless LAN Analysis Boot Camps

Demo Question 30.

You are a network administrator at EliteCertify.com. EliteCertify.com is renting space in a multi-tenant office building and has recently installed a new 802.11b wireless LAN in their office. You have very little experience with wireless LANs, and have recently purchased a wireless LAN protocol analyzer for diagnostic use. You have attended a wireless administration class that dealt with basic wireless LAN operation. During the course of troubleshooting a performance problem, you cannot understand why you are simultaneously seeing ATIM frames, CF. End frames, and PS-Poll frames on channel 2. After you approach an independent consultant to explain why this is happening, you find that which of the following is NOT plausible?

A. Seeing ATIM frames, CF. End frames, and PS-Poll frames in the same capture is normal. Seeing these frames together means that Power Save Poll mode is in use on a PCF mode network.
B. EliteCertify.com's wireless LAN is using channels 1, 2, and 3. This design is causing adjacent channel interference, which is corrupting 802.11b frames. The analyzer is seeing this frame corruption and reporting the frames as it sees them.
C. EliteCertify.com's wireless LAN is using channel 2, and their neighbors in the building are running PCF mode networks and Ad Hoc networks on channel 2 as well. Each of the wireless networks have client stations operating in low-power mode.
D. EliteCertify.com's wireless LAN is using channels 1, 6, and 11. The frames the administrator is seeing while capturing on channel 2 are corrupted frame fragments that the analyzer is attempting to interpret.


Display Answer

Answer: A

Explanation: