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High-quality 4A0-112 Exam - 100% Pass-Rate Source of 4A0-112 Exam

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Nokia 4A0-112 Certification Exam is designed for network engineers, architects, and administrators who are responsible for developing and maintaining large, complex networks. Candidates who pass 4A0-112 exam will have a deep understanding of the fundamentals of the Nokia IS-IS Routing Protocol, including its implementation, operation, and optimization. They will also be well-versed in the best practices for troubleshooting and resolving issues that may arise in networks that use this protocol.

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The 4A0-112 exam is one of the most valuable certification exams. The Nokia IS-IS Routing Protocol (4A0-112) certification exam opens a door for beginners or experienced TestValid professionals to enhance in-demand skills and gain knowledge. 4A0-112 exam credential is proof of candidates' expertise and knowledge. After getting success in the Nokia IS-IS Routing Protocol (4A0-112) certification exam, candidates can put their careers on the fast route and achieve their goals in a short period of time.

Nokia 4A0-112 Certification Exam is a valuable certification for network professionals who want to advance their careers in the networking industry. Nokia IS-IS Routing Protocol certification demonstrates that the candidate has a deep understanding of the IS-IS protocol and its applications, which is a critical skill in service provider environments. Holding this certification can lead to new job opportunities and higher salaries.

Nokia IS-IS Routing Protocol Sample Questions (Q33-Q38):

NEW QUESTION # 33
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 not have a matching entry in its routing table for router R6's system IP address.
D. Router R4 will have a default route with router R2 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 # 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 multiple copies of the new link-state advertisement, it will simply ignore all copies received after the first one.
B. If a router receives the new link-state advertisement, it acknowledges it, stores it, and forwards it to its own neighbors.
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. Every router that receives the new link-state advertisement updates its age field before forwarding it.

Answer: D

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
For a link-state routing protocol, which of the following statements about link-state updates is FALSE?

A. Aging helps ensure that routers that are no longer part of the topology will eventually get removed from the link-state database.
B. When a router detects that a link-state update has reached its maximum age, it will request a new update from the source router.
C. The age value is updated as the link-state update is flooded throughout the network and when it is in the link-state database
D. When a link-state update reaches its maximum age on a router, the router will flood that update to its neighbors.

Answer: D

Explanation:
When a link-state update reaches its maximum age, it is removed from the router's link-state database, not flooded to its neighbors. This prevents outdated information from continuing to affect the routing decisions. The router does not flood the aged update; instead, it will typically request a new link-state advertisement from the original source router if the information is still needed.

NEW QUESTION # 36
Which of the following definitions best describes route redistribution?

A. It is the process of passing routing information from one routing domain to another, which usually means from one routing protocol to another.
B. It is the process of redirecting packets to be processed by an intermediate network function before allowing them to be forwarded to their intended final destination.
C. It is the process of deciding at line-rate speed which packets will be dropped and which ones will be forwarded.
D. It is the process of controlling which route advertisements received from routing peers are accepted and/or deciding which locally known prefixes are advertised to routing peers.

Answer: A

Explanation:
Route redistribution is the process of sharing routing information between different routing protocols or routing domains. For example, a router might redistribute routes learned via OSPF into a BGP routing table or vice versa. This enables routers to exchange routing information even when they are using different routing protocols.

NEW QUESTION # 37
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 R1
C. Router R2
D. Routers R2 and R4

Answer: C

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 # 38
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