CWNA: Certified Wireless Network Administrator v108 — Question 14

You are troubleshooting a problem with a new 802.11ax AP. While the AP supports four spatial streams, most clients are only achieving maximum data rates of 150 Mbps. What is the likely cause?

Answer options

• A. The clients are only two stream 802.11ax clients
• B. Contention caused by an overlapping BSS
• C. The clients are 802.11n devices
• D. Non-Wi-Fi interference in the channel

Correct answer: B

Explanation

The correct answer is B because overlapping Basic Service Sets (BSS) can create contention for resources, leading to reduced performance. While options A and C could explain lower data rates, they do not account for the specific performance issue described, and option D, while relevant, does not specifically address the issue of contention between BSSs.