Question 110
After a change at a remote branch, the original incident was: A 5 GHz cell has strong signal but persistent client failures because channel airtime is fully consumed during shift change. Which evidence BEST verifies that the specific failure has been corrected?
Explanation
Correct Answer
Busy-hour client performance improves alongside capacity SLE results under comparable traffic. This directly checks the outcome of the chosen remediation and confirms the problem was not merely hidden. The diagnostic issue was: a high RSSI does not prevent capacity degradation from channel contention.
Incorrect Answers
The mobile cohort's measured experience is visible separately from a single test workstation. This would demonstrate a different scenario was fixed—a Wi-Fi success report uses one healthy laptop as proof that all smartphones at the site meet the network experience goal—but does not validate recovery from a 5 GHz cell has strong signal but persistent client failures because channel airtime is fully consumed during shift change.
Affected clients achieve acceptable RF conditions and the same coverage SLE improves. This would demonstrate a different scenario was fixed—a new SSID reports poor coverage SLE even though all APs are online and broadcasting—but does not validate recovery from a 5 GHz cell has strong signal but persistent client failures because channel airtime is fully consumed during shift change.
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 5 GHz cell has strong signal but persistent client failures because channel airtime is fully consumed during shift change.