CWNA: Certified Wireless Network Administrator v107 — Question 35

You are troubleshooting a client issue on a Windows laptop. The laptop can see and connect to 2.4 GHz APs, but is does not even see 5 GHz APs. While evaluating the issue, you determine that this problem is happening for all of the laptops of this model in the organization. Several other tablets connect on channel
48 and channel 52 in the same work areas. What is the likely problem?

Answer options

• A. The clients are configured to use WPA and 5 GHz channels only support WPA2.
• B. The antennas in the laptop have insufficient gain to detect the 5 GHz signals.
• C. The access points are configured to disallow 5 GHz.
• D. The client drivers are faulty and should be upgraded.

Correct answer: B

Explanation

The correct answer is B because the insufficient gain of the laptop's antennas can prevent it from detecting higher frequency 5 GHz signals, which is a common issue with certain laptop models. Option A is incorrect because WPA is compatible with 5 GHz; option C is not valid as the question states other devices are connecting; option D does not address the antenna issue, which is the main cause of the problem.