JN0-363 OSPF Practice Questions
The free JN0-363: Service Provider Routing and Switching, Specialist (JNCIS-SP) questions that deal with OSPF, with answers and explanations. The full bank and the timed practice test cover every topic the exam asks about.
Question #5
Exhibit Which prefix in the output shown in the exhibit is an external prefix injected by an OSPF router?
Correct answer: B
Explanation
172.18.1.0/24 is listed with path type Ext2, meaning it was injected as an external (Type 2) route by an ASBR. 172.26.4.0/30 is an Inter-area route, not external.
Question #6
Which LSA type does an OSPF ABR use to advertise external routes generated by an NSSA ASBR into the backbone?
Correct answer: A
Explanation
Type 7 LSAs are confined to the NSSA, so the ABR translates them into Type 5 LSAs before advertising the external routes into the backbone. Type 3 LSAs carry inter-area prefixes, not external routes.
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