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Nokia 4A0-112 exam focuses on the Nokia IS-IS routing protocol, which is an essential aspect of network routing. 4A0-112 exam aims to validate your skills and knowledge in configuring, monitoring, and troubleshooting the Nokia IS-IS routing protocol. Passing 4A0-112 exam is essential for network engineers who want to design and manage complex networks using Nokia's networking solutions.

Nokia 4A0-112 certification exam comprises multiple-choice questions that evaluate the candidates' understanding of the IS-IS protocol and its various applications. 4A0-112 exam is conducted in a proctored environment and is available in multiple languages. Candidates who successfully pass the exam receive the Nokia IS-IS Routing Protocol certification, which is recognized worldwide and is highly valued by network professionals and employers.

To prepare for the Nokia 4A0-112 Certification Exam, candidates should have a strong understanding of networking concepts and protocols, particularly in the areas of IP routing and switching. Candidates can also take advantage of Nokia’s training resources and study materials, which include instructor-led courses, e-learning modules, and practice exams. Achieving the Nokia 4A0-112 certification can open up a range of opportunities for IT professionals, including roles in network design, implementation, and management.

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4A0-112 Study Demo | New 4A0-112 Test Question

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Nokia IS-IS Routing Protocol Sample Questions (Q20-Q25):

NEW QUESTION # 20
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 table manager (RTM)
B. The routing information base (RIB)
C. The forwarding information base (FIB)
D. The equal cost multipath configuration

Answer: A

Explanation:
The routing table manager (RTM) is responsible for selecting the best route when multiple routing protocols provide a route for the same destination prefix. It makes the decision on which route to add to the routing table based on the administrative distance, metric, and other criteria.

NEW QUESTION # 21
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 route to router R6's system IP address 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 default route 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.

Answer: A

Explanation:
Router R4 is in Area 49.0001 and R6 is in Area 49.0002. Both routers are Level 2 (L2), meaning that they can communicate across areas using Level 2 IS-IS routing.
Since R2 is the L1/L2 router that connects both Area 49.0001 and Area 49.0002, it will be the next-hop for router R4 to reach R6's system IP address.
The IS-IS protocol will ensure that R4 will have a route to R6's system IP address via R2 as the next-hop.

NEW QUESTION # 22
A series of actions are triggered on a router as a result of enabling both loopfree-alternate for a link-state routing protocol and ip-fast-reroute. Which of the following is NOT one of those actions?

A. Calculating a backup next hop for each known IP prefix, if it exists, that would not create a routing loop if used without informing other routers.
B. Installing two entries in the FIB for IP prefixes, one active and one in standby mode.
C. Calculating the shortest-path next hop for each known IP prefix.
D. Enabling the router to locally repair the active path to an IP prefix in case of failure.

Answer: C

NEW QUESTION # 23
Which of the following statements about IS-IS is FALSE?

A. A router becomes level-2 when it is associated with the backbone area.
B. In IS-IS, routers are associated with an area, not the interfaces.
C. A level-1 router forwards traffic to other areas through the nearest I eve I-1/1 eve I-2 router.
D. IS-IS uses the concept of level-1 and level-2 routers to implement hierarchy.

Answer: B

Explanation:
In IS-IS, routers are actually associated with interfaces rather than the entire router being associated with a single area. A router can have interfaces in multiple areas, and it is the interface's configuration that determines which area it belongs to.

NEW QUESTION # 24
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.

Answer: C

Explanation:
In both broadcast and point-to-point interfaces, IS-IS routers identify neighbors using system IDs, not interface MAC addresses. The system ID is a unique identifier assigned to each router, and it is used to identify neighbors in both types of interfaces.

NEW QUESTION # 25
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