Question 850
The WLAN team at a six-floor commercial tower has addressed this issue: A high-density WLAN reports unacceptable throughput while per-client RSSI and AP cloud connections remain normal. Which measurable observation would MOST convincingly demonstrate successful remediation?
Explanation
Correct Answer
User experience improves when peak-channel contention falls at matched client load. This directly checks the outcome of the chosen remediation and confirms the problem was not merely hidden. The diagnostic issue was: radio link quality alone does not describe shared channel capacity under heavy contention.
Incorrect Answers
The time-linked channel interference event is identified and retry rates improve after correction. This would demonstrate a different scenario was fixed—a WLAN's aggregate retry rate rises after AP density increases, but no one inspects spectrum and radio event history—but does not validate recovery from a high-density WLAN reports unacceptable throughput while per-client RSSI and AP cloud connections remain normal.
Captured EAP and association events isolate the individual fault without unnecessary third-party traffic. This would demonstrate a different scenario was fixed—a wireless engineer enables a broad packet capture for all site clients to debug one user's intermittent authentication failure—but does not validate recovery from a high-density WLAN reports unacceptable throughput while per-client RSSI and AP cloud connections remain normal.
Name resolution succeeds at expected latency while association and DHCP remain healthy. This would demonstrate a different scenario was fixed—wireless users can receive an IP address but experience long delays resolving internal applications by hostname—but does not validate recovery from a high-density WLAN reports unacceptable throughput while per-client RSSI and AP cloud connections remain normal.