Question 390
At the Zincbridge energy utility, a core link flaps only under temperature changes while optical levels approach the minimum threshold. Which underlying issue most directly explains this situation?
Explanation
Correct Answer
The evidence indicates that temperature sensitive optical hardware can fall outside receive tolerance and interrupt the link. The appropriate response is to inspect thermal and optical module telemetry and compare with approved signal margins and demonstrate that a replacement optic passes temperature and load checks without flapping. This result addresses the stated challenge at the Zincbridge energy utility.
Incorrect Answers
An overly aggressive queue allocation can starve another important traffic class. This option is based on the following distinct technical behavior: an overly aggressive queue allocation can starve another important traffic class, rather than merely a monitoring or presentation issue. The present question instead depends on this mechanism: temperature sensitive optical hardware can fall outside receive tolerance and interrupt the link. That difference matters for the requested root-cause explanation.
overtemperature or failed cooling hardware can cause throttling and shutdown independent of routing configuration, rather than merely a monitoring or presentation issue. The offered alternative applies that mechanism: Overtemperature or failed cooling hardware can cause throttling and shutdown independent of routing configuration. The reported facts point to a different controlling condition: temperature sensitive optical hardware can fall outside receive tolerance and interrupt the link. The alternative does not directly settle the required root-cause explanation.
Loss of VSX coordination requires interpreting split and operational state rather than blindly bouncing all links. Its technical scope is explained by: loss of VSX coordination requires interpreting split and operational state rather than blindly bouncing all links, the required evidence must show that a controlled repair restores VSX peer health and downstream multi-chassis aggregation. In this question, the decisive issue is: temperature sensitive optical hardware can fall outside receive tolerance and interrupt the link. That is why the offered option is not the most direct root-cause explanation.