4A0-112 Exam Training Practice Tests (Nokia IS-IS Routing Protocol)]

Question 1

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. Router R2 B. Routers R1 and R2 C. Router R1 D. Routers R2 and R4

Correct Answer: A

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Question 2

Refer to the exhibit.

All routers in the diagram are running a link-state routing protocol. Before the link failure, all routers have operational adjacencies with each other and there is a BFD session between routers R1 and R3. After the link failure, which of the following affects the routing protocol's convergence time?

A. The value of the BFD transmit interval, receive interval and multiplier settings on routers R1 and R3. B. The value of the Ethernet hello timers on the switches. C. The time taken by the switches to detect that the physical ports are down. D. The value of the routing protocol hello timers on routers R1 and R3.

Correct Answer: A

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Question 3

When multiple routing protocols offer a route for the same prefix, what part of the router is in charge of deciding which route to make active?

A. The routing information base (RIB) B. The forwarding information base (FIB) C. The equal cost multipath configuration D. The routing table manager (RTM)

Correct Answer: D

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Question 4

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. Route leaking is configured on router R1 but not on router R2. B. Route leaking is configured on both routers R1 and R2. C. There is no route leaking configured on router R1 or router R2. D. Route leaking is configured on router R2 but not on router R1.

Correct Answer: B

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Question 5

A new router is added to a broadcast network. What does IS-IS use as the tiebreaker for selecting the DIS if the priorities are the same?

A. The router with the highest interface MAC address. B. The router with the highest system ID. C. The Hello packet with the highest sequence number. D. The existing DIS remains the DIS.

Correct Answer: B

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Nokia IS-IS Routing Protocol - 4A0-112 Exam Practice Test