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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Allene

29 days ago

Option C is the way to go. The higher airtime on the primary channel is totally normal when you're running an 80 MHz channel. Gotta love those Wi-Fi standards and their complexities!

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Xochitl

1 months 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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Truman

6 days ago

B) RRM is enabled and has dynamically picked a 20 MHz channel

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Marion

9 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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Gearldine

10 days ago

B) RRM is enabled and has dynamically picked a 20 MHz channel

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Carmela

19 days ago

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

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Lashawn

24 days ago

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

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Kathrine

1 months 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

1 months ago

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

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Vincent

2 months 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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Ceola

22 days ago

Clearly, the RRM is causing issues with the channel configuration. The IT guy needs to fix this.

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Cherelle

1 months ago

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

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Cherry

2 months 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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Ramonita

15 days ago

B) RRM is enabled and has dynamically picked a 20 MHz channel

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Roslyn

19 days ago

A) While 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?

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Denny

1 months 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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