NEWEST LATEST 4A0-112 VERSION - PASS 4A0-112 EXAM

Newest Latest 4A0-112 Version - Pass 4A0-112 Exam

Newest Latest 4A0-112 Version - Pass 4A0-112 Exam

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Tags: Latest 4A0-112 Version, Latest 4A0-112 Study Notes, Valid 4A0-112 Test Blueprint, Valid 4A0-112 Test Practice, Real 4A0-112 Exams

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Nokia IS-IS routing protocol is a popular and widely used protocol in the telecommunications industry. It is used to route data packets through a network and provides a scalable and reliable solution for large networks. To work with the Nokia IS-IS routing protocol, it is essential to have a thorough understanding of the protocol's operation and its configuration. The Nokia 4A0-112 certification exam measures a candidate's proficiency in these areas.

Nokia 4A0-112 Exam is designed for professionals who are interested in obtaining the Nokia Service Routing Certification (SRC) in the field of Intermediate Routing. 4A0-112 exam validates the candidate's knowledge and skills in the intermediate level of the Nokia IS-IS Routing Protocol. 4A0-112 exam measures the candidate's ability to configure, troubleshoot, and manage intermediate-level routing protocols in the Nokia Service Router.

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Latest 4A0-112 Study Notes, Valid 4A0-112 Test Blueprint

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Nokia 4A0-112 Exam covers a wide range of topics related to IS-IS, including the protocol's operation, design considerations, and implementation best practices. Candidates are expected to have a deep understanding of IS-IS's routing principles, including its use of link-state advertisements (LSAs) and the differences between the Level 1 and Level 2 routing domains. They should also be familiar with Nokia's implementation of IS-IS, including the configuration of IS-IS on Nokia routers, the use of IS-IS metrics, and the implementation of IS-IS features such as route leaking and summarization.

Nokia IS-IS Routing Protocol Sample Questions (Q39-Q44):

NEW QUESTION # 39
For a link-state routing protocol, which of the following statements about link-state updates is FALSE?

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

Answer: A

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 # 40
Refer to the exhibit.

In the diagram, all routers are using IS-IS as their routing protocol. The number next to each link is its metric value.
What path will traffic follow from router R1 to router R7, and from router R7 to router R1?

  • A. Router R1 to router R7 will follow (R1-R3-R5-R6-R7). Router R7 to router R1 will follow (R7-R6-R4-R2-R1).
  • B. Router R1 to router R7 will follow (R1-R3-R5-R6-R7). Router R7 to router R1 will follow (R7-R6-R5-R3-R1).
  • C. Router R1 to router R7 will follow (R1-R2-R4-R6-R7). Router R7 to router R1 will follow (R7-R6-R4-R2-R1).
  • D. Router R1 to router R7 will follow (R1-R2-R4-R6-R7). Router R7 to router R1 will follow (R7-R6-R5-R3-R1).

Answer: C

Explanation:
From R1 to R7: The path will be R1 → R2 → R4 → R6 → R7 because this path has the least cumulative metric of 10 + 10 + 10 + 10 = 40.
From R7 to R1: The reverse path will follow R7 → R6 → R4 → R2 → R1 because it is the shortest return path with the same metrics.


NEW QUESTION # 41
Refer to the exhibit.

A static route has been configured on router R1 to reach the PC at 139.120.121.2.
What might be causing the ping to fail?

  • A. The configured static route needs to be a default route.
  • B. Router R1 needs a static route to router R2.
  • C. The configured next hop does not belong to a subnet adjacent to R1.
  • D. Router R2 needs a static route to the PC.

Answer: C

Explanation:
In the configuration on router R1, the static route is defined with the next-hop IP address of 139.120.121.1.
However, the next-hop IP address 139.120.121.1 does not belong to the same subnet as the directly connected interface on R1, which is 172.31.1.1/30. For the static route to work properly, the next-hop IP address must be reachable via a directly connected interface, meaning it must be within the same subnet.
Therefore, this mismatch in subnet adjacency is likely causing the failure to reach the destination (139.120.121.2).


NEW QUESTION # 42
A routing domain uses a link-state routing protocol. Which of the following would NOT be an advantage of dividing the entire routing domain into areas?

  • A. Detailed topology information is only shared among routers within the same area, thus reducing the complexity of the SPF calculation.
  • B. Route tables can be reduced by summarizing the IP prefixes advertised between areas.
  • C. Less-capable routers can be isolated from having to keep track of IP prefixes that are external to the local routing domain.
  • D. Fewer routers are required to handle the same amount of traffic, as compared to a single-area domain.

Answer: D

Explanation:
Dividing a domain into areas typically does not reduce the number of routers needed to handle traffic. It is more focused on improving scalability, reducing the size of routing tables, and limiting the scope of SPF calculations, but it doesn't inherently reduce the number of routers required.


NEW QUESTION # 43
Refer to the exhibit.

Routers R1 through R4 in the diagram have established IS-IS adjacencies. Router R1 is L1/L2 and is the DIS of its two broadcast interfaces. How many LSPs will it generate?

  • A. 0
  • B. 1
  • C. 2
  • D. 3

Answer: D

Explanation:
Router R1 is configured as L1/L2, meaning it is part of both Level 1 and Level 2 IS-IS routing areas. This means R1 will generate two types of LSPs:
Level 1 LSP (for the local area 49.0001) to advertise its local topology to other Level 1 routers.
Level 2 LSP (for the backbone area 49.0002) to advertise the global network topology to Level 2 routers.
R1 also has two broadcast interfaces, and as the Designated Intermediate System (DIS) on these interfaces, it will generate an LSP for each interface (one per broadcast link).
This results in three total LSPs:
A Level 1 LSP for the local area (49.0001).
A Level 2 LSP for the backbone area (49.0002).
An LSP for each of the two broadcast interfaces, which may include interface-related topology information.


NEW QUESTION # 44
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