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Nokia 4A0-112 Exam is a valuable certification for network professionals who wish to demonstrate their expertise in the intermediate-level routing protocols used in large-scale networks. It is an essential certification for those who work in service provider networks, data centers, and enterprise networks. Candidates who pass the exam are recognized as experts in the field and are highly sought after by employers looking for skilled professionals to manage their network infrastructures.

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Nokia 4A0-112 Lab Questions, Valid 4A0-112 Exam Answers

The aim of ExamDiscuss is to support you in passing the Nokia 4A0-112 certification exam. ExamDiscuss present actual Nokia 4A0-112 practice test questions for you. The world's skilled professionals share their best knowledge with ExamDiscuss and create this set of actual Nokia IS-IS Routing Protocol 4A0-112

Nokia IS-IS Routing Protocol Sample Questions (Q34-Q39):

NEW QUESTION # 34
A router running a link-state routing protocol detects that one of its neighbors is no longer connected to it. The router generates a new link-state advertisement to inform other routers of the topology change. Which of the following is NOT an action that is triggered by this event?

A. If a router receives the new link-state advertisement, it acknowledges it, stores it, and forwards it to its own neighbors.
B. Every router that receives the new link-state advertisement updates its age field before forwarding it.
C. Every router that receives the new link-state advertisement runs the SPF algorithm to recalculate its shortest-path tree and its forwarding database.
D. If a router receives multiple copies of the new link-state advertisement, it will simply ignore all copies received after the first one.

Answer: B

Explanation:
When a router receives a link-state advertisement (LSA), it does not update the age field before forwarding it. The age field in an LSA is typically updated by the originating router or during the process of forwarding the LSA within the network. Routers do not modify the age field upon receiving and forwarding an LSA.

NEW QUESTION # 35
Two IS-IS neighboring routers are trying to establish an adjacency, but the interface has been configured as broadcast on one of them and as point-to-point on the other. Why is the adjacency not established?

A. The routers do not agree on the result of the DIS election.
B. The routers discard the received Hello messages because they are not the expected type: LAN Hello vs point-to-point Hello.
C. The routers do not receive each other's Hello messages because they listen for messages transmitted to different multicast MAC addresses.
D. The routers do not receive each other's Hello messages because they listen for messages transmitted to different multicast IP addresses.

Answer: B

Explanation:
IS-IS routers use different types of Hello messages depending on whether the interface is configured as a broadcast (LAN) or point-to-point (P2P) link.
On a broadcast network (e.g., Ethernet), IS-IS routers use LAN Hello packets to establish adjacencies.
On a point-to-point link, IS-IS uses point-to-point Hello packets.
If one router is configured for a broadcast interface and the other for point-to-point, they will exchange incompatible Hello packets, and as a result, neither router will accept the other's Hello messages, preventing the adjacency from being established.

NEW QUESTION # 36
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 R2 but not on router R1.
B. Route leaking is configured on both routers R1 and R2.
C. Route leaking is configured on router R1 but not on router R2.
D. There is no route leaking configured on router R1 or router R2.

Answer: B

Explanation:
From the route tables of R3 and R4, we can see that remote routes are present, with R3 and R4 both having routes referencing routers in different areas (Area 49.01 and 49.02). These remote routes are characteristic of route leaking, which is the process of sharing routes between different IS-IS areas.
R3 has routes for R1, R2, and R4, which are in Area 49.01, suggesting that R1 and R2 have advertised their routes to R3, possibly due to route leaking.
R4 has similar routes for R2 and R3, indicating that R2 might have advertised its routes to R4.
This sharing of routes between areas is indicative of route leaking being configured on both R1 and R2, allowing these routes to be shared across the areas.

NEW QUESTION # 37
Refer to the exhibit.

Routers R1, R2, R3, and R4 are running IS-IS. Assuming all interfaces are added to IS-IS as point-to-point and no commands are issued at the interface level to restrict adjacencies, which of the following statements is TRUE?

A. All four routers are L1/L2.
B. Routers R1 and R2 are L2 routers. Routers R3 and R4 are L1 routers.
C. Routers R1 and R2 are L1/L2 routers. Routers R3 and R4 are L1 routers.
D. Routers R1 and R2 are L2 routers. Routers R3 and R4 are L1/L2 routers.

Answer: C

Explanation:
From the output, we can see that the usage column indicates whether a router is operating as an L1 or L2 router:
The L1/L2 designations refer to whether the routers participate in both Level 1 and Level 2 of IS-IS:
In this case, R1 and R2 are L2 routers, and R3 and R4 are L1 routers.

NEW QUESTION # 38
Which of the following is NOT a function of the control plane a router?

A. To utilize the forwarding tables to forward data packets towards their destination.
B. To determine the best way to forward packets.
C. To establish routing paths to deliver packets from source to destination and to reestablish them in case of failure.
D. To exchange signaling messages with other routers.

Answer: A

Explanation:
The data plane (or forwarding plane) is responsible for actually forwarding the data packets. It uses the information stored in the forwarding table to determine how to move packets from one interface to another toward their destination.

NEW QUESTION # 39
......

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Nokia 4A0-112 Lab Questions, Valid 4A0-112 Exam Answers

Nokia IS-IS Routing Protocol Sample Questions (Q34-Q39):

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