Question 660
At Transit Operations Center, a floor has acceptable coverage but Wi-Fi calls drop because channel noise rises during production. What observable outcome would prove this repair actually works?
Explanation
Correct Answer
For Transit Operations Center, the decisive mechanism is Low SNR wireless retries. Signal strength without a noise context cannot establish usable WLAN quality. Retune a controlled radio and verify improved SNR plus voice packet success supplies measurable, case-relevant evidence that the intended behavior actually occurs.
Incorrect Answers
This is relevant to Wrong VLAN mapping, where wLAN-to-wired mapping errors can appear as a DHCP or authorization defect In the Transit Operations Center case, That test could pass while the actual user-facing requirement still fails. The specific mechanism is signal strength without a noise context cannot establish usable WLAN quality
This is relevant to Routed blackhole, where route presence alone does not prove usable bidirectional forwarding In the Transit Operations Center case, That test could pass while the actual user-facing requirement still fails. The specific mechanism is signal strength without a noise context cannot establish usable WLAN quality
This is relevant to Physical-link errors, where layer 1/2 corruption can degrade packets even though link status remains up In the Transit Operations Center case, That test could pass while the actual user-facing requirement still fails. The specific mechanism is signal strength without a noise context cannot establish usable WLAN quality