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CWNP Exam CWAP-404 Topic 1 Question 13 Discussion

Actual exam question for CWNP's CWAP-404 exam
Question #: 13
Topic #: 1
[All CWAP-404 Questions]

A PHY Header is added to the PSDU at which layer?

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Suggested Answer: C

A STA that supports 802.11k Radio Measurement would send a Neighbor Request to an AP to request a list of neighboring APs which the STA can use as roaming candidates. A Neighbor Request is an Action frame that contains a subelement specifying the type of information that the STA wants to receive from the AP. A Neighbor Report is an Action frame that contains a subelement with a list of neighboring APs that match the criteria specified in the Neighbor Request. The Neighbor Report provides information such as BSSID, channel, operating class, and PHY type of each neighboring AP. This information helps the STA to perform intelligent roaming decisions based on signal quality, load, and compatibility . Reference: CWAP-404 Certified Wireless Analysis Professional Study and Reference Guide, Chapter 12: 802.11k/v/r/u/w/ai Amendments, page 434; CWAP-404 Certified Wireless Analysis Professional Study and Reference Guide, Chapter 12: 802.11k/v/r/u/w/ai Amendments, page 435.


Contribute your Thoughts:

Arlette
22 days ago
I'm going with C) PHY, but I can't help but wonder if the person who wrote this question was considering a career in stand-up comedy. 'Where's the PHY header added?' Sounds like the start of a great joke!
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Matthew
23 days ago
This one's a no-brainer - C) PHY is the correct answer. The PHY layer is where the magic happens, so that's where the header belongs. It's like putting your name on a paper before you start writing the essay.
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Lajuana
1 months ago
C) PHY is the way to go. The PHY layer is the foundation for everything else, so it makes sense that's where the header would be added. It's like putting the building blocks in place before you start constructing the rest of the house.
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Josefa
5 days ago
D) MAC
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Jordan
7 days ago
C) PHY
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Judy
25 days ago
A) LLC
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Stephen
25 days ago
B) Network
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Cecily
28 days ago
A) LLC
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Dante
1 months ago
I was a bit confused, but after thinking it through, C) PHY makes the most sense. The PHY layer is all about the physical transmission of the data, so that's where the header would be added.
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Arlie
2 months ago
The PHY layer is where the header is added, so C) PHY is the correct answer.
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Gearldine
27 days ago
D: Yeah, it can be tricky to keep track of all the details.
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Kris
28 days ago
C: I always get confused with the different layers in networking.
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Sherman
1 months ago
B: Oh, I see. Thanks for clarifying that.
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Basilia
1 months ago
A: The PHY layer is where the header is added, so the correct answer is C) PHY.
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Felice
2 months ago
I'm not sure, but I think it could also be added at the MAC layer.
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Marya
2 months ago
I agree with Bette, it makes sense for the PHY Header to be added at the PHY layer.
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Bette
2 months ago
I think the PHY Header is added at the PHY layer.
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