最新的Nokia Network Routing Specialist II認證 4A0-112考試題庫

問題1

Consider the exhibit.

All routers are running IS-IS with IPv6 support enabled. Based on the topology shown, and the route tables of routers R3 and R4, which of the following statements is TRUE?

A. There is no route leaking configured on router R1 or router R2.

B. Route leaking is configured on router R1 but not on router R2.

C. Route leaking is configured on both routers R1 and R2.

D. Route leaking is configured on router R2 but not on router R1.

正確答案: C

說明：（僅 VCESoft 成員可見）

問題2

Refer to the exhibit.

Examine the physical topology of the IS-IS network, the metrics of the links and the levels of the routers. All routers have their system interfaces included in IS-IS. Which of the following statements describes the route-table entry that router R4 will use to reach the system IP address of router R6?

A. Router R4 will have a default route with router R2 as the next-hop.

B. Router R4 will have a default route with router R3 as the next-hop.

C. Router R4 will have a route to router R6's system IP address with router R2 as the next-hop.

D. Router R4 will not have a matching entry in its routing table for router R6's system IP address.

正確答案: C

說明：（僅 VCESoft 成員可見）

問題3

There are several differences between IS-IS Hello packets used on broadcast interfaces and on point-to-point interfaces.
Which of the following statements is FALSE?

A. The multicast MAC addresses to which the Hello messages are sent are different on broadcast interfaces and on point-to-point interfaces.

B. On broadcast interfaces there are different Hello packet types for level-1 and level-2 adjacencies, whereas on point-to-point interfaces there is a single Hello packet type.

C. The neighbors are identified using their interface MAC addresses on broadcast Hello messages and using their system IDs on point-to-point Hello messages.

D. Broadcast Hello messages identify the elected designed IS (DIS) and point-to-point Hello messages do not.

正確答案: C

說明：（僅 VCESoft 成員可見）

問題4

When a router performs the SPF calculation, which router is used as the root of the shortest path tree?

A. The router with the lowest router ID.

B. The router's closest neighbor.

C. The router doing the calculation.

D. The router with the fewest links.

正確答案: C

說明：（僅 VCESoft 成員可見）

問題5

Refer to the exhibit.

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

A. Routers R1 and R2

B. Routers R2 and R4

C. Router R1

D. Router R2

正確答案: D

說明：（僅 VCESoft 成員可見）

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