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CWNP Exam CWAP-404 Topic 1 Question 15 Discussion

Actual exam question for CWNP's CWAP-404 exam
Question #: 15
Topic #: 1
[All CWAP-404 Questions]

As a wireless network consultant you have been called in to troubleshoot a high-priority issue for one of your customers. The customer's office is based on two floors within a multi-tenant office block. On one of these floors (floor 5) users cannot connect to the wireless network. During their own testing the customer has discovered that users can connect on floor 6 but not when they move to the floor 5. This issue is affecting all users on floor 5 and having a negative effect on productivity.

To troubleshoot this issue, you perform both Spectrum and Protocol Analysis. The Spectrum Analysis shows the presence of Bluetooth signals which you have identified as coming from wireless mice. In the protocol analyzer you see the top frame on the network is Deauthentication frames. On closer investigation you see that the Deauthentication frames' source addresses match the BSSIDs of your customers APs and the destination address is FF:FF:FF:FF:FF:FF:FF.

What do you conclude from this troubleshooting exercise?

Show Suggested Answer Hide Answer
Suggested Answer: B

802.11k Neighbor Requests and Neighbor Reports are sent in Action frames. An Action frame is a Management frame that is used to perform various operations or functions related to the operation or maintenance of a wireless network. An Action frame consists of a Category field that indicates the type of action being performed, and a variable-length Action Details field that contains specific information related to the action. For example, an Action frame with a Category field value of 5 indicates a Radio Measurement action, and the Action Details field may contain a Neighbor Request or a Neighbor Report subelement . Reference: CWAP-404 Certified Wireless Analysis Professional Study and Reference Guide, Chapter 6: MAC Sublayer Frame Exchanges, page 207; CWAP-404 Certified Wireless Analysis Professional Study and Reference Guide, Chapter 6: MAC Sublayer Frame Exchanges, page 208; CWAP-404 Certified Wireless Analysis Professional Study and Reference Guide, Chapter 12: 802.11k/v/r/u/w/ai Amendments, page 434.


Contribute your Thoughts:

Scarlet
29 days ago
I'd bet my wireless router that option B is the correct answer. Gotta love those sneaky WIPS systems, always causing more problems than they solve.
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Latonia
14 hours ago
It's definitely a possibility that the users on floor 5 are being targeted by a denial of service attack.
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Alonzo
9 days ago
I agree, those WIPS systems can be a real headache.
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Novella
1 months ago
Nah, can't be the APs on floor 4. Probably just a bunch of mice playing a prank on the floor 5 users. Better call in the exterminator!
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Omer
1 months ago
Hmm, the deauthentication frames pointing to the customer's APs is definitely a red flag. Looks like a vendor support case is in order.
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Reuben
1 months ago
Ah, the old wireless mice vs. rogue WIPS debate. I'd say option B is the way to go here. Gotta love wireless troubleshooting!
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Sena
8 days ago
Definitely, it's always interesting to troubleshoot wireless network issues. Hopefully, they can get it sorted out soon.
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Florinda
15 days ago
Yeah, it's probably a misconfigured WIPS causing the issue. The tenants on the floor below need to check their settings.
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Isabella
18 days ago
I agree, option B seems like the most likely scenario. Those Deauthentication frames are definitely suspicious.
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Werner
1 months ago
Seems like a tricky issue. The Bluetooth mice could be causing interference, but the deauthentication frames are more concerning. I'm leaning towards the WIPS solution being the culprit.
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Teri
2 days ago
It could be a denial of service attack, especially since it's happening on the entire floor.
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Nenita
19 days ago
I agree, the deauthentication frames are definitely suspicious.
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Eileen
2 months ago
So, should the customer replace all their Bluetooth wireless mice to solve the problem?
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Leanora
2 months ago
I agree, it's causing interference and preventing users on floor 5 from connecting.
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Quiana
2 months ago
I think the issue is with the Bluetooth signals from the wireless mice.
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