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Nokia 4A0-112 Exam is aimed at network engineers and administrators who are responsible for designing, implementing, and maintaining large-scale networks that use the IS-IS routing protocol. 4A0-112 exam is designed to validate the candidate's knowledge and skills in configuring and troubleshooting IS-IS, as well as their ability to analyze and optimize the performance of IS-IS networks. Passing the exam demonstrates that the candidate has a deep understanding of the IS-IS protocol and is capable of effectively managing complex network environments.

Nokia IS-IS Routing Protocol Sample Questions (Q10-Q15):

NEW QUESTION # 10
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 information base (RIB)
B. The routing table manager (RTM)
C. The equal cost multipath configuration
D. The forwarding information base (FIB)

Answer: B

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 # 11
Which of the following definitions best describes route redistribution?

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

Answer: C

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 # 12
On a broadcast interface, an IS-IS router receives an LSP that is newer than the one on its database. Which of the following statements best describes the actions taken by the router as a consequence?

A. The router updated its database with the LSP, acknowledges the LSP with a PSNP, and floods a copy to its neighbors on other interfaces.
B. The router updates its database with the LSP and acknowledges it with a PSNP.
C. The router sends back a copy of the LSP from its database to its neighbor.
D. The router updates its database with the LSP and floods a copy to its neighbors on other interfaces.

Answer: A

Explanation:
When an IS-IS router receives a newer LSP (Link-State PDU) than the one already in its database, it takes the following actions:
Updates its link-state database with the new LSP.
Acknowledges the LSP with a PSNP (Partial Sequence Number PDU), which is sent to the router that originated the LSP, confirming the receipt of the newer LSP.
Floods a copy of the updated LSP to its neighbors on other interfaces to ensure all routers in the network have the updated topology information.

NEW QUESTION # 13
What do the address resolution protocol (ARP) for IPv4 and the neighbor discovery procedures for IPv6 have in common?

A. Both resolve a host device's MAC address using its IP address.
B. Both detect duplicate MAC address assignments.
C. Both detect duplicate IP address assignments.
D. Both resolve a host device's IP address using its MAC address.

Answer: A

Explanation:
ARP for IPv4 and Neighbor Discovery Protocol (NDP) for IPv6 are both used to map a device's IP address to its MAC address. This is essential for communication within a local network.
ARP is used in IPv4 networks, and NDP performs a similar function in IPv6 networks, ensuring devices can communicate effectively on the same network segment.

NEW QUESTION # 14
Which of the following statements about the IP forwarding process on a router is TRUE?

A. It uses the routing table to find a match for the destination IP address.
B. It uses the routing table to find a match for the source IP address.
C. It uses the ARP table to find a match for the source MAC address.
D. It uses the ARP table to find a match for the destination MAC address.

Answer: A

Explanation:
During the IP forwarding process, routers use the routing table to determine the next hop based on the destination IP address. The source IP address is not directly involved in the lookup process for forwarding.
The ARP table is used to map IP addresses to MAC addresses, specifically for resolving the MAC address of the next hop (destination MAC address) for forwarding packets within the local network.

NEW QUESTION # 15
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Desired Nokia 4A0-112 Dumps - Free 365 Days Updates [2025]

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Nokia IS-IS Routing Protocol Sample Questions (Q10-Q15):

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