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

Question

Options

• AManual route summarization can only be done on autonomous system border routers.
• BManual route summarization must be done on all the backbone routers to be effective. Manual route summarization is optional on the routers in non-backbone
• CManual route summarization is done on the ABRs. By default, automatic summarization is done; however, it may not be optimal for all networks.
• DManual route summarization is done on the ABRs. By default, no route summarization is done and all routes are advertised to all areas.

• A
  6% (1)
• B
  6% (1)
• C
  17% (3)
• D
  72% (13)

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