QUESTION: 49

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In the IS-IS network shown, router R1 has been configured to summarize network 20.20.1.0/24 and 20.20.2.0/24 as 20.20.0.0/16. Which router's routing table will be reduced compared to the routing table before the summarization?

Router R1
Router R2
Routers R1 and R2
Router R4

Answer(s): B

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QUESTION: 50

Which of the following statements best describes an OSPF type 3 LSA?

An OSPF type 3 LSA is an intra-area LSA, generated by the ABR only when route summarization is configured.
An OSPF type 3 LSA is an inter-area LSA, generated by the ABR only when route summarization is configured.
An OSPF type 3 LSA is an inter-area LSA, generated by an ASBR to describe external routes.
An OSPF type 3 LSA is an inter-area LSA, generated by the ABR to describe a route to neighbors outside the area.

Answer(s): D

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QUESTION: 51

What command will show the OSPF neighbors, and their status on the Alcatel-Lucent 7750 SR?

Show ospf neighbors
Show router ospf neighbors
Show router ospf adjacency
Show ospf adjacency

Answer(s): B

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QUESTION: 52

Which of the following statements regarding link state protocols are true? (Choose two)

When a router receives updates from its neighbors, it adds them to its link state database, performs an SPF computation, and sends the results to its neighbors.
An SPF computation is done by each router to determine the best path to destination networks. All the best paths determined by the SPF calculation will be seen in the route table.
Each router constructs its own link state database with updates received from neighbors.
An SPF computation is done by each router to determine the best path to destination networks. All the best paths determined by the SPF calculation will be offered to the route table manager.

Answer(s): C,D

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