CWNA: Certified Wireless Network Administrator v107 — Question 13

When a client station sends a broadcast probe request frame with a wildcard SSID, how do APs respond?

Answer options

• A. For each probe request frame, only one AP may reply with a probe response.
• B. Each AP responds in turn after preparing a probe response and winning contention.
• C. Each AP checks with the DHCP server to see if it can respond and then acts accordingly.
• D. After waiting a SIFS, all APs reply at the same time with a probe response.

Correct answer: A

Explanation

The correct answer is A because in a wireless network, only one access point is permitted to respond to a broadcast probe request to avoid confusion and collisions. Options B, C, and D are incorrect as they misrepresent the way access points handle broadcast probe requests, either suggesting multiple responses or unnecessary checks with the DHCP server.