What are two reasons that an OSPF router does not have any type 5 link-state advertisements (LSAs) in its link-state database (LSDB)? (Choose two answers)

• A. IP protocol 89 is blocked between the local router and its peer
• B. There is no autonomous system border router (ASBR) in the network
• C. The peer of the local router is using a prefix-list-out configuration to prevent all type 5 LSAs to be advertised
• D. The local router is located in a stub area

Correct Answer: B,D

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