VALID 4A0-112 CURRENT EXAM CONTENT OFFER YOU ACCURATE NEW EXAM DISCOUNT | NOKIA NOKIA IS-IS ROUTING PROTOCOL

Valid 4A0-112 Current Exam Content offer you accurate New Exam Discount | Nokia Nokia IS-IS Routing Protocol

Valid 4A0-112 Current Exam Content offer you accurate New Exam Discount | Nokia Nokia IS-IS Routing Protocol

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Nokia IS-IS Routing Protocol Sample Questions (Q23-Q28):

NEW QUESTION # 23
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 R6 to router R3, and from router R3 to router R6?

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

Answer: C

Explanation:
The metric values between the routers dictate the routing paths, and IS-IS will calculate the shortest path based on these values.
R6 to R3: The path from R6 to R3 will go through R5 and R2, as this route has the least cumulative metric (10 + 10 + 15 = 35).
R3 to R6: The reverse path from R3 to R6 will follow R3 → R2 → R5 → R6 because this route is also the shortest with a total metric of 10 + 10 + 10 = 30.


NEW QUESTION # 24
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 the shortest-path next hop for each known IP prefix.
  • B. Enabling the router to locally repair the active path to an IP prefix in case of failure.
  • C. Installing two entries in the FIB for IP prefixes, one active and one in standby mode.
  • D. 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.

Answer: A


NEW QUESTION # 25
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 not be established.
  • B. An adjacency will be established without authentication.
  • C. An adjacency will be established with authentication using the default parameters defined for IS-IS routers.
  • D. The two routers will negotiate the authentication parameters and the establish an adjacency.

Answer: A

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 # 26
Which of the following definitions best describes route redistribution?

  • A. It is the process of deciding at line-rate speed which packets will be dropped and which ones will be forwarded.
  • B. 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.
  • C. 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.
  • D. It is the process of passing routing information from one routing domain to another, which usually means from one routing protocol to another.

Answer: D

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 # 27
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. The system interface exists by default.
  • D. They can be logical or physical.

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 # 28
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