Question 880
At a manufacturing complex in Detroit, engineers report that a PoE-powered AP drops link when its old copper run experiences intermittent pair faults. The work affects production and maintenance endpoints. Which test result most directly confirms the required behavior?
Explanation
Correct Answer
This observation tests the Physical/link layer diagnosis and interface counters requirement at a manufacturing complex in Detroit. The expected result is that the repaired interface has stable link state, no continuing physical errors and expected packet forwarding. The necessary correction is to check physical state, optics/cabling, speed/duplex and error counters before investigating routing or application-layer faults; a saved configuration alone would not prove it is working. In this case, the observed fault is that a PoE-powered AP drops link when its old copper run experiences intermittent pair faults.
Incorrect Answers
At a manufacturing complex in Detroit, this would verify AP uplink and client address dependencies, not the failure reported in this scenario. The requested closure criterion instead concerns Physical/link layer diagnosis and interface counters: the repaired interface has stable link state, no continuing physical errors and expected packet forwarding.
At a manufacturing complex in Detroit, the observation may be useful for a separate Layer-three routing and application path troubleshooting test, but it does not establish that a PoE-powered AP drops link when its old copper run experiences intermittent pair faults has been resolved. The relevant check is the Physical/link layer diagnosis and interface counters outcome.
At a manufacturing complex in Detroit, this measures a different network requirement, WLAN association, authentication and DHCP triage. The case describes that a PoE-powered AP drops link when its old copper run experiences intermittent pair faults, so accepting this result would leave the primary fault without direct verification.