CWNP Exam CWAP-403 Topic 11 Question 81 Discussion

Actual exam question for CWNP's CWAP-403 exam

Question #: 81
Topic #: 11

You have installed a new 802.11ac WLAN configured with 80 MHz channels. Users in one area are

complaining about poor performance. This area is currently served by a single AP. You take a spectrum

analysis capture in the poor performing are

AWhile examining the waterfall plot you notice the airtime
utilization is higher on the first 20 MHz of the 80 MHz channel when compared to the rest of the channel. What do you conclude?

AThe AP is misconfigured and needs to be reconfigured to 80MHz operation

BRRM is enabled and has dynamically picked a 20 MHz channel

CThe first 20 MHz is the AP's primary channel and higher airtime utilization on the primary channel is normal when an AP Is configured for 80 MHz operation

DNon Wi-Fi interference is preventing the APs 80 MHz operation

Show Suggested Answer

Suggested Answer: C

by Alex at May 03, 2025, 04:01 AM

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Xochitl

4 days ago

Hmm, non-WiFi interference, huh? Sounds like someone's microwave oven is having a field day in that area. Time to call the 'frequency police'!

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Kathrine

6 days ago

I believe the non Wi-Fi interference could be preventing the APs 80 MHz operation, causing the poor performance.

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Soledad

8 days ago

I think RRM might be enabled and dynamically picked a 20 MHz channel, causing the issue.

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Vincent

16 days ago

Clearly, the RRM is playing tricks with the channel configuration. I bet the IT guy who set this up has no idea what he's doing.

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Cherelle

2 days ago

A) The AP is misconfigured and needs to be reconfigured to 80MHz operation

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Cherry

28 days ago

If the airtime utilization is higher on the first 20 MHz, then it's likely the AP is configured for 80 MHz operation. The primary channel is the first 20 MHz, so that makes sense.

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Denny

10 hours ago

C) The first 20 MHz is the AP's primary channel and higher airtime utilization on the primary channel is normal when an AP Is configured for 80 MHz operation

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