CWNA: Certified Wireless Network Administrator v109 — Question 11

The BSA of an AP covers the area used by the sales and marketing department. Thirty-five stations operate in this space. The users indicate that they need more throughput and all stations are 5 GHz capable 802.11ac clients that support only required features of the 802.11ac amendment. The current AP configuration uses 20 MHz channels in both 2.4 GHz and 5 GHz. What is the least expensive solution available for increasing throughput for these users without implementing configuration options that are not recommended?

Answer options

• A. Install a second AP in the coverage area
• B. Use a 40 MHz channel on the 5 GHz radio
• C. Use a 40 MHz channel on the 2.4 GHz radio
• D. Use a 160 MHz channel on the 5 GHz radio

Correct answer: B

Explanation

The best choice is B, using a 40 MHz channel on the 5 GHz radio, as it doubles the channel width compared to the current 20 MHz configuration, thus improving throughput. Option A would incur additional costs for a second AP without guaranteed throughput improvement. Options C and D are either not feasible for the 2.4 GHz band or exceed the recommended configurations for the current setup.