2025 NOKIA 4A0-112: NOKIA IS-IS ROUTING PROTOCOL USEFUL EXAM TESTS

2025 Nokia 4A0-112: Nokia IS-IS Routing Protocol Useful Exam Tests

2025 Nokia 4A0-112: Nokia IS-IS Routing Protocol Useful Exam Tests

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Tags: 4A0-112 Exam Tests, 4A0-112 Valid Exam Discount, Study 4A0-112 Group, 4A0-112 Latest Dumps Pdf, Real 4A0-112 Braindumps

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Passing the Nokia 4A0-112 Exam is essential for network engineers who want to advance their careers in the networking field. Nokia IS-IS Routing Protocol certification validates your skills and knowledge in configuring and managing complex networks using Nokia's networking solutions. It also demonstrates to employers that you have the expertise to design and maintain large-scale networks using the IS-IS routing protocol.

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Nokia 4A0-112 exam is designed to test the proficiency of IT professionals in the implementation and configuration of the Nokia IS-IS Routing Protocol. The Nokia IS-IS Routing Protocol is a widely used protocol in the networking industry, and it is essential for the smooth functioning of large-scale networks. 4A0-112 Exam focuses on various aspects of the protocol, including design, implementation, and troubleshooting.

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

NEW QUESTION # 34
Two IS-IS routers are exchanging Hello packets. One is configured to use authentication and the other is not. Which of the following statements is TRUE?

  • A. An adjacency will be established without authentication.
  • B. The two routers will negotiate the authentication parameters and the establish an adjacency.
  • C. An adjacency will be established with authentication using the default parameters defined for IS-IS routers.
  • D. An adjacency will not be established.

Answer: D

Explanation:
IS-IS routers must have matching authentication settings to establish an adjacency. If one router is configured with authentication and the other is not, the routers will not be able to establish an adjacency because their authentication parameters do not match.


NEW QUESTION # 35
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 not have a matching entry in its routing table for router R6's system IP address.
  • C. Router R4 will have a default route with router R2 as the next-hop.
  • D. Router R4 will have a default route with router R3 as the next-hop.

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

Answer: C

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
Which of the following statements about router interfaces on a Nokia 7750 SR is FALSE?

  • A. They can be assigned IPv4 and/or IPv6 addresses.
  • B. They can be used in pairs on the same subnet for redundancy.
  • C. They can be logical or physical.
  • D. The system interface exists by default.

Answer: B

Explanation:
Typically, interfaces on a Nokia 7750 SR router are not configured in pairs on the same subnet for redundancy. Instead, redundancy is achieved through mechanisms like Virtual Router Redundancy Protocol (VRRP) or other high availability protocols, not by simply using interfaces in pairs on the same subnet.


NEW QUESTION # 38
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. Router R2
  • C. Routers R2 and R4
  • D. Router R1

Answer: B

Explanation:
Router R1 is the one that performs the summarization of the two subnets (20.20.1.0/24 and 20.20.2.0/24) into the summarized route 20.20.0.0/16. However, R1 itself will not see any change in its routing table because it is directly connected to both subnets and already knows about them.
Router R2, which is in Area 49.0002, will benefit from this summarization because it previously had separate routes for both 20.20.1.0/24 and 20.20.2.0/24. After the summarization, R2 will only need to maintain a single route to 20.20.0.0/16, reducing the size of its routing table.
Router R4 does not directly benefit from the summarization because it is only connected to the Level 1 network and has no need for the summarized routes from R1. Thus, the summarization does not affect R4's routing table.


NEW QUESTION # 39
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