FCSS_NST_SE-7.4 · Question #86
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.)
The correct answer is A. The local router is located in a stub area. C. There is no autonomous system border router (ASBR) in the network. The local router is located in a stub area. Stub areas suppress Type 5 LSAs, so none appear in the LSDB. There is no autonomous system border router (ASBR) in the network. Without an ASBR there are no external routes to advertise, so no Type 5 LSAs are ever
Question
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.)
Options
- AThe local router is located in a stub area.
- BIP protocol 89 is blocked between the local router and its peer.
- CThere is no autonomous system border router (ASBR) in the network.
- DThe peer of the local router is using a prefix-list-out configuration to prevent all type 5 LSAs
How the community answered
(35 responses)- A77% (27)
- B14% (5)
- D9% (3)
Explanation
The local router is located in a stub area. Stub areas suppress Type 5 LSAs, so none appear in the LSDB. There is no autonomous system border router (ASBR) in the network. Without an ASBR there are no external routes to advertise, so no Type 5 LSAs are ever
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