Question 1020
At Learning Commons, a handheld shows strong signal but high retry rate beside machinery at lunch hour. Which test best differentiates real success from a merely healthy status light?
Explanation
Correct Answer
For Learning Commons, 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 Learning Commons 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 Learning Commons 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 Learning Commons 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