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CWNP CWNA-109 Exam - Topic 2 Question 37 Discussion

You were previously onsite at XYZ's 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?
C) Application analysis with an active phone call on an VoWiFi handset.
A) Spectrum analysis to locate and identify RF interference sources.
B) Frequency-band hopping analysis to detect improper RF channel implementations.
D) Protocol analysis to discover channel use on neighboring APs.

CWNP CWNA-109 Exam - Topic 2 Question 37 Discussion

Actual exam question for CWNP's CWNA-109 exam
Question #: 37
Topic #: 2
[All CWNA-109 Questions]

You were previously onsite at XYZ's 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?

Show Suggested Answer Hide Answer
Suggested Answer: C

When performing a post-deployment validation survey for voice over Wi-Fi (VoWiFi), an action that must be performed isApplication analysis with an active phone call on a VoWiFi handset. Application analysis is a method of testing the performance of a specific application over the WLAN by measuring parameters such as throughput, latency, jitter, packet loss, MOS score, and R-value. Application analysis with an active phone call on a VoWiFi handset can help to evaluate the quality of service (QoS) and user experience of VoWiFi calls over the WLAN. It can also help to identify any issues or bottlenecks that may affect VoWiFi calls such as interference, roaming delays, or insufficient coverage.Reference:[CWNP Certified Wireless Network Administrator Official Study Guide: Exam CWNA-109], page 549; [CWNA: Certified Wireless Network Administrator Official Study Guide: Exam CWNA-109], page 519.


by Amira at Mar 08, 2026, 11:49 AM

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Avery
25 days ago
Wait, isn't C just as important for VoWiFi?
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Chaya
1 month ago
Totally agree, A is the way to go!
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Hailey
1 month ago
Gotta do a spectrum analysis to find interference!
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Mitsue
1 month ago
I agree, spectrum analysis is a must for any post-deployment survey.
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Elenore
2 months ago
Wait, are we really doing frequency-band hopping analysis? Sounds complicated!
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Rickie
2 months ago
Not sure about that, I’d prioritize protocol analysis first.
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Izetta
2 months ago
I think application analysis is crucial too, especially with VoWiFi.
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Raymon
2 months ago
Definitely need to do the spectrum analysis to find any interference.
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Raylene
2 months ago
I’m a bit confused; I thought protocol analysis was more about understanding channel use. Is that what D is about?
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Patti
2 months ago
I practiced a similar question, and I feel like analyzing the application during a call is important for validating the deployment. So, C seems likely.
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Gladys
3 months ago
I'm not entirely sure, but I remember something about spectrum analysis being crucial for identifying interference. Could that be option A?
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Lamar
3 months ago
I think we need to check the actual performance of VoWiFi, so maybe option C is the right choice?
upvoted 0 times
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