GIAC Penetration Tester (GPEN) — Question 38

ACME corporation has decided to setup wireless (IEEE 802.11) network in it's sales branch at Tokyo and found that channels 1, 6, 9,11 are in use by the neighboring offices. Which is the best channel they can use?

Answer options

• A. 4
• B. 5
• C. 10
• D. 2

Correct answer: D

Explanation

Channel 2 is the best option as it is not overlapping with the channels in use (1, 6, 9, and 11) and provides a clear path for communication. Channels 4, 5, and 10, however, are either overlapping or too close to the occupied channels, which may lead to interference and reduced performance.