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Total 105 questions
To prevent inter-area routing loops, OSPF does not allow advertising routing information between two non-backbone areas and allows advertising routing information only within an area or between the backbone area and a non-backbone area. Therefore, each ABR must be connected to the backbone area.
- A. TRUE
- B. FALSE
Answer : A
Which of the following statements regarding OSPF packets is false?
- A. DD packets contain all LSA information and can be used to periodically synchronize LSOB information between neighbors.
- B. Hello packets are used to discover and maintain OSPF neighbor relationships and also can be used to elect DR and BDR on broadcast and NBMA networks.
- C. Two routers must send Hello packets at the same interval. Otherwise, they cannot establish an OSPF neighbor relationship.
- D. DD packets carry LSA header information to describe link state summary information.
Answer : A
Which of the following statements regarding OSPF neighbor relationship and adjacency is true?
- A. Not all neighbors can establish adjacencies.
- B. Neighbor relationships are selected from adjacencies to exchange routing information.
- C. OSPF routers must establish an adjacency before exchanging information.
- D. Adjacencies are maintained using OSPF DD packet
Answer : A
Which of the following statements regarding different LSA types is false?
- A. LS Update packets contain complete LSA information.
- B. LS Ack packets contain complete LSA information.
- C. LS Request packets contain only LS Type, LS ID, and Advertising Rooter.
- D. DD packets contain only LSA summary information, including LS Type, LS ID, Advertising Router, and LS Sequence Number.
Answer : B
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