CWNP CWNA-109 Exam - Topic 1 Question 9 Discussion

Actual exam question for CWNP's CWNA-109 exam

Question #: 9
Topic #: 1

During a post-implementation survey, you have detected a non-802.11 wireless device transmitting in the area used by handheld 802.11g scanners. What is the most important factor in determining the impact of this non-802.11 device?

AReceive sensitivity

BChannel occupied

CAirtime utilization

DProtocols utilized

Show Suggested Answer

Suggested Answer: D

The IEEE 802.11ax standard, also known as High-Efficiency Wireless (HEW) or simply HE, includes support for operation across multiple frequency bands: 2.4 GHz, 5 GHz, and, with the appropriate regulatory approvals, the 6 GHz band. This makes option D the correct answer. Here's how it compares to the other options:

HE (802.11ax): Introduced as an enhancement over previous standards, 802.11ax is designed to improve efficiency, especially in dense environments. It supports operation in the 2.4 GHz, 5 GHz, and 6 GHz bands (the latter pending regulatory approval in various regions), making it highly versatile and future-proof.

VHT (802.11ac): Very High Throughput, or 802.11ac, operates exclusively in the 5 GHz band. It introduced significant speed improvements over its predecessor (802.11n) but does not support the 2.4 GHz or 6 GHz bands.

HT (802.11n): High Throughput, or 802.11n, supports operation in both the 2.4 GHz and 5 GHz bands. However, it does not include support for the 6 GHz band.

HR/DSSS (802.11b): High-Rate Direct Sequence Spread Spectrum, or 802.11b, operates only in the 2.4 GHz band. It was one of the early Wi-Fi standards and does not support 5 GHz or 6 GHz bands.

Given these distinctions, only 802.11ax (option D) supports operation across all three mentioned bands, aligning with the requirements stated in the question.

IEEE 802.11ax-2021: High-Efficiency Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications.

Understanding the 802.11ax (Wi-Fi 6) standard and its implications for modern wireless networking.

by Vilma at Jul 15, 2024, 08:40 AM

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Mirta

9 months ago

Protocols utilized could also play a role, don’t overlook that!

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Leigha

9 months ago

Wait, are we sure this non-802.11 device is even a problem?

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Karl

10 months ago

I think airtime utilization matters more, though.

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Leota

10 months ago

Totally agree, it can really mess with performance.

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Gregoria

10 months ago

Channel occupied is key here.

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Gwenn

10 months ago

I keep thinking about receive sensitivity, but I’m not sure how it compares to the other options. It seems like it could matter, but is it the most important?

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Jame

11 months ago

I feel like protocols utilized could also play a role, but I don't recall it being the main focus in our practice exams.

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Mitsue

11 months ago

I'm a bit unsure, but I remember something about airtime utilization being crucial in similar questions. It might be about how much time the devices can actually use the channel.

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Buddy

11 months ago

I think the channel occupied might be the most important factor since it directly affects interference with the 802.11g scanners.

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Una

11 months ago

I'm pretty confident that the airtime utilization is the most important factor. If the non-802.11 device is hogging a lot of airtime, that's going to have a big impact on the 802.11g scanners.

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Sheridan

11 months ago

I'm not sure about this one. The protocols utilized by the non-802.11 device could also be a key factor, since that might affect how it interacts with the 802.11g network.

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Janessa

11 months ago

Okay, let's see. I think the most important factor here is the channel occupied by the non-802.11 device. That's going to determine how much it interferes with the 802.11g scanners.

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Tequila

11 months ago

Hmm, this seems like a tricky one. I'll need to think carefully about the factors that could impact the 802.11g scanners.

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Galen

11 months ago

Okay, I think I've got it. The output of Action1 should be sent using the path "BlockA.BlockB.Action1".

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Camellia

1 year ago

The correct answer is clearly 'B) Channel occupied'. It's like having a noisy neighbor who just won't keep it down - you gotta know how much space they're taking up before you can figure out how to deal with them.

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Kasandra

1 year ago

This question is like a game of wireless 'whack-a-mole'. You gotta find that pesky non-802.11 device and shut it down before it ruins the party for everyone!

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Nan

1 year ago

Receive sensitivity? Really? That's like trying to fix a leaky faucet by adjusting the water pressure. The non-802.11 device is the problem here, not the scanners!

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Cordie

1 year ago

D) Protocols utilized

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Georgiana

1 year ago

C) Airtime utilization

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Annmarie

1 year ago

B) Channel occupied

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Ashanti

1 year ago

A) Receive sensitivity

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Coral

1 year ago

Airtime utilization is the key here. If this device is just a constant, low-level hum in the background, it might not be too much of a problem. But if it's a bandwidth-hogging, data-guzzling beast, then we're in trouble!

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Tenesha

1 year ago

C) Airtime utilization

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Hassie

1 year ago

B) Channel occupied

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Kate

1 year ago

A) Receive sensitivity

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Chauncey

1 year ago

I think the protocols utilized are crucial. If it's some obscure, esoteric protocol, it could be causing all sorts of interference and compatibility issues. It's like trying to play a cassette tape on a CD player - not gonna work!

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Lorrie

1 year ago

D) Protocols utilized

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Maile

1 year ago

C) Airtime utilization

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Celia

1 year ago

B) Channel occupied

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Edgar

1 year ago

A) Receive sensitivity

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Kina

1 year ago

I think receive sensitivity is crucial in determining the impact of the non-802.11 device.

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Shelba

1 year ago

I disagree, I believe airtime utilization is the key factor here.

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Zona

1 year ago

I think the most important factor is the channel occupied.

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Marci

1 year ago

The channel occupied by the non-802.11 device is definitely the most important factor. It's like a car taking up the entire highway, leaving no room for the other cars. We need to know how much of the airspace it's hogging!

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