350-401 Question #1011: Real Exam Question with Answer & Explanation

Question

Refer to the exhibit. An engineer is troubleshooting an issue with client devices triggering excessive power changes on APs in the 2.4 GHz band. Which action resolves this issue?

Options

• ADisable Aironet IE.
• BSet the 802.11b/g/n DTIM interval to 0.
• CEnable MFP Client Protection.
• DDisable Coverage Hole Detection.

Explanation

Explanation

Disabling Coverage Hole Detection (CHD) resolves this issue because CHD monitors client signal strength reports and, when clients appear to be at the edge of coverage, it automatically triggers power increases on APs to compensate - in the 2.4 GHz band, this can create a cycle of excessive, unnecessary power adjustments driven by client device behavior.

• Option A (Disable Aironet IE) is incorrect because Aironet Information Elements are Cisco proprietary extensions that enhance communication features; they do not drive transmit power changes.
• Option B (Set DTIM to 0) is incorrect because the DTIM (Delivery Traffic Indication Map) interval controls buffered multicast/broadcast delivery timing for sleeping clients, which is unrelated to power adjustments.
• Option C (Enable MFP Client Protection) is incorrect because Management Frame Protection is a security feature that protects management frames from spoofing, having no bearing on power level changes.

🧠 Memory Tip: Think of Coverage Hole Detection as the feature that "hears client complaints and cranks up the volume" - if clients are causing false alarms, turning it off stops the AP from constantly adjusting power in response.

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