CWNA: Certified Wireless Network Administrator v107 — Question 24

You were previously onsite at XYZs facility to conduct a pre-deployment RF site survey. The WLAN has been deployed according to your recommendations and you are onsite again to perform, a post-deployment validation survey.
When performing this type of post-deployment RF site survey voice over Wi-Fi, what is an action that must be performed?

Answer options

• A. Spectrum analysis to locate and identify RF interference sources.
• B. Frequency-band hopping analysis to detect improper RF channel implementations.
• C. Protocol analysis to discover channel use on neighboring APs.
• D. Application analysis with an active phone call on an VoWiFi handset.

Correct answer: A

Explanation

The correct answer is A because performing a spectrum analysis is crucial to identify any RF interference that may affect the performance of voice over Wi-Fi. Options B, C, and D, while relevant in other contexts, do not specifically address the need to identify interference sources in a post-deployment validation survey.