CWNA: Certified Wireless Network Administrator v108 — Question 10

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 client drivers are faulty and should be upgraded.
• C. The antennas in the laptop have insufficient gain to detect the 5 GHz signals.
• D. The access points are configured to disallow 5 GHz.

Correct answer: C

Explanation

The correct answer is C because insufficient antenna gain can indeed lead to the inability to detect higher frequency 5 GHz signals. Option A is incorrect since WPA is compatible with both frequency bands. Option B does not address the specific issue of signal detection but rather suggests a driver issue, which is not indicated. Option D is also incorrect because if the access points were configured to disallow 5 GHz, the laptops would still see those access points but would be unable to connect.