Question 480
At the Oakport public agency, IPTV clients report intermittent stream loss but administrators inspect only ordinary unicast route summaries. Which ongoing control best prevents this issue from recurring?
Explanation
Correct Answer
The continuing safeguard is to trend multicast membership and RPF failure counts. It helps avoid the original condition: multicast delivery depends on its own control and forwarding tables in addition to unicast routing. This result addresses the stated challenge at the Oakport public agency.
Incorrect Answers
Review NAE agent performance and false-alert rates quarterly. Its technical scope is explained by: it requires the team to review NAE agent performance and false-alert rates quarterly. In this question, the decisive issue is: multicast delivery depends on its own control and forwarding tables in addition to unicast routing, the required evidence must show that a monitored subscription test shows receiver memberships and source packets on the approved interface. That is why the offered option is not the most direct recurrence control.
The option states: Audit configuration changes against approved work orders monthly. The source describes its associated mechanism as: uncontrolled edits remove traceability and may prevent rapid service restoration. By contrast, the current situation is governed by: multicast delivery depends on its own control and forwarding tables in addition to unicast routing, the required evidence must show that a monitored subscription test shows receiver memberships and source packets on the approved interface. Choosing this alternative would leave the question’s specific recurrence control unresolved.
Keep platform migration mappings in backup runbooks. This option is based on the following distinct technical behavior: a backup from different hardware or release cannot be assumed directly reusable, the required evidence must show that a test restore identifies unsupported features and re-establishes intended forwarding. The present question instead depends on this mechanism: multicast delivery depends on its own control and forwarding tables in addition to unicast routing, the required evidence must show that a monitored subscription test shows receiver memberships and source packets on the approved interface. That difference matters for the requested recurrence control.