4A0-C04 practice question 1 of 35

If OSPF is used in a multi-area OSPF network, which of the following statements regarding route summarization is true?

Answer options

A: Manual route summarization can only be done on autonomous system border routers.

B: Manual route summarization must be done on all the backbone routers to be effective. Manual route summarization is optional on the routers in non-backbone areas.

C: Manual route summarization is done on the ABRs. By default, automatic summarization is done; however, it may not be optimal for all networks.

D: Manual route summarization is done on the ABRs. By default, no route summarization is done and all routes are advertised to all areas. Correct answer

Correct Answer:

D. Manual route summarization is done on the ABRs. By default, no route summarization is done and all routes are advertised to all areas.

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