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4A0-112 Latest Test Format Is The Useful Key to Pass Nokia IS-IS Routing Protocol

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Nokia 4A0-112 certification exam validates the skills and knowledge of individuals in the implementation and operation of Nokia's IS-IS routing protocol. Nokia is a leading telecommunications equipment company that provides network solutions for service providers and enterprises. The Nokia IS-IS routing protocol is used to manage the distribution of network traffic in large and complex networks, ensuring efficient and scalable routing.

Nokia 4A0-112 certification exam is intended for network engineers, network architects, and network administrators who are responsible for designing, implementing, and maintaining network infrastructures that use the Nokia IS-IS routing protocol. 4A0-112 Exam is also suitable for professionals who want to enhance their knowledge and skills in routing protocols and improve their career prospects in the networking industry. Passing the Nokia 4A0-112 exam validates the candidate's expertise in the Nokia IS-IS routing protocol, which is widely used in Service Provider and Enterprise networks. It also demonstrates the candidate's commitment to professional development and continuous learning.

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

NEW QUESTION # 23
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 with authentication using the default parameters defined for IS-IS routers.
B. An adjacency will not be established.
C. The two routers will negotiate the authentication parameters and the establish an adjacency.
D. An adjacency will be established without authentication.

Answer: B

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 # 24
What is the replacement for ARP in IPv6?

A. Stateless address auto-configuration procedures.
B. Duplicate address detection procedures.
C. Neighbor discovery procedures.
D. Router discovery procedures.

Answer: C

Explanation:
In IPv6, the Neighbor Discovery Protocol (NDP) replaces the Address Resolution Protocol (ARP) used in IPv4. NDP is responsible for several functions, including resolving IP addresses to MAC addresses (similar to ARP), detecting duplicate IP addresses, and discovering other devices on the network.

NEW QUESTION # 25
Refer to the exhibit.

Static routing is to be used in a network between a corporate head office and a branch office. The head office has many connected subnetworks, whereas the branch office has one subnetwork and a single connection to the head office. Which of the following is the most likely configuration on the head office and branch office routers?

A. The head office has a default route and the branch office has a specific static route.
B. The head office has a specific static route and the branch office has a default route.
C. The head office and the branch office both have default routes.
D. The head office and the branch offices both have specific static routes.

Answer: A

Explanation:
The head office has many connected subnetworks, so it will typically have a default route to forward traffic to the branch office (or external networks), since it may not need to define static routes for each branch network.
The branch office, which has only one subnetwork and a single connection to the head office, will have a specific static route to reach the head office subnet or other subnets at the head office, since it only needs to know the specific route to reach the head office's network.

NEW QUESTION # 26
Refer to the exhibit.

Routers R1, R2, R3, and R4 are running IS-IS. Assuming all interfaces are added to IS-IS as point-to-point and no commands are issued at the interface level to restrict adjacencies, which of the following statements is TRUE?

A. Routers R1 and R2 are L2 routers. Routers R3 and R4 are L1/L2 routers.
B. Routers R1 and R2 are L1/L2 routers. Routers R3 and R4 are L1 routers.
C. All four routers are L1/L2.
D. Routers R1 and R2 are L2 routers. Routers R3 and R4 are L1 routers.

Answer: B

Explanation:
From the output, we can see that the usage column indicates whether a router is operating as an L1 or L2 router:
The L1/L2 designations refer to whether the routers participate in both Level 1 and Level 2 of IS-IS:
In this case, R1 and R2 are L2 routers, and R3 and R4 are L1 routers.

NEW QUESTION # 27
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 updates its database with the LSP and acknowledges it with a PSNP.
B. The router sends back a copy of the LSP from its database to its neighbor.
C. The router updates its database with the LSP and floods a copy to its neighbors on other interfaces.
D. The router updated its database with the LSP, acknowledges the LSP with a PSNP, and floods a copy to its neighbors on other interfaces.

Answer: D

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 # 28
......

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