Question 30
An ASBR redistributes static test networks into OSPF. Observed: A remote router prefers an external route over the expected alternative only after a cost change. Which acceptance observation best confirms that the proposed change worked?
Explanation
Correct Answer
This acceptance criterion tests the actual fault. The source evidence was A remote router prefers an external route over the expected alternative only after a cost change. The correction addresses type-1 and type-2 external metric semantics were treated as interchangeable; success requires remote best-path selection changes according to the documented E1 or E2 metric behavior.
Incorrect Answers
This result is useful in another case with evidence Several neighbors repeatedly exchange database descriptions without completing synchronization. It does not test recovery from a remote router prefers an external route over the expected alternative only after a cost change. Check instead whether remote best-path selection changes according to the documented E1 or E2 metric behavior.
It confirms an unrelated service correction: OSPFv3 protocol adjacency and IPv6 address-family enablement were not implemented. The present case reports A remote router prefers an external route over the expected alternative only after a cost change. Its completion test is Remote best-path selection changes according to the documented E1 or E2 metric behavior.
That observation would verify a separate fault involving the device is not a valid abr with an area 0 logical path. Its symptom is Summaries from area 2 fail to propagate even though the transit neighbor is operational. For this case the actual issue is type-1 and type-2 external metric semantics were treated as interchangeable, and the relevant success signal is Remote best-path selection changes according to the documented E1 or E2 metric behavior.