Question 440
At the Highbridge transport facility, an important fiber link remains up but its optical receive power steadily approaches the transceiver threshold. How should the organization sustain the improvement?
Explanation
Correct Answer
For the Highbridge transport facility, this maintenance action preserves the fix: review optic sensor history and replacement candidates monthly. It should be revisited as the workload evolves.
Incorrect Answers
frequent root movement can cause temporary forwarding reconvergence even when no interface permanently fails. The offered alternative applies that mechanism: Alert on unauthorized spanning-tree root elections. The reported facts point to a different controlling condition: a link can appear operational until optical margins deteriorate enough to cause intermittent failure. The alternative does not directly settle the required recurrence control.
The option states: Audit backup completion and test recoverability each quarter. The source describes its associated mechanism as: a switch running configuration cannot be reconstructed reliably after hardware loss without an archived copy, rather than merely a monitoring or presentation issue. By contrast, the current situation is governed by: a link can appear operational until optical margins deteriorate enough to cause intermittent failure. Choosing this alternative would leave the question’s specific recurrence control unresolved.
Compare switches to the baseline after every change window. This option is based on the following distinct technical behavior: configuration drift increases security exposure and incident uncertainty between otherwise similar sites. The present question instead depends on this mechanism: a link can appear operational until optical margins deteriorate enough to cause intermittent failure. That difference matters for the requested recurrence control.