CWDP: Certified Wireless Design Professional v303 — Question 6

When doing some frame capturing over the air during a voice call, you realized that frames on the downlink (from the AP to the client) direction are not being transmitted with the correct UP value for voice frames, but on the uplink (from the client to the AP) direction are being transmitted correctly. What's the cause of this issue?

Answer options

• A. Bad client driver
• B. AP is not receiving enough PoE, thus not using QoS features
• C. Somewhere on the wired network QoS markings aren't being trusted
• D. Faulty antenna on the AP

Correct answer: B

Explanation

The correct answer is B because if the Access Point (AP) is not receiving enough Power over Ethernet (PoE), it may lack the resources to implement Quality of Service (QoS) features, which would lead to incorrect handling of voice frames. Option A is incorrect because a bad client driver would affect uplink transmission as well. Option C is also wrong, as the issue specifically pertains to downlink transmission, while option D does not address the QoS aspect needed for proper voice frame handling.