Nokia - High Hit-Rate 4A0-112 - Nokia IS-IS Routing Protocol Valid Study Questions

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To prepare for the Nokia 4A0-112 certification exam, candidates can take advantage of a range of resources, including study guides, practice exams, and training courses. Nokia also offers a comprehensive training program that covers the IS-IS routing protocol and other key topics related to Nokia networks. This program includes hands-on lab exercises and real-world scenarios designed to enhance practical skills.

Nokia 4A0-112 certification is an excellent choice for network engineers who want to demonstrate their expertise in Nokia IS-IS Routing Protocol. Passing 4A0-112 Exam will demonstrate your competence in designing, deploying, and troubleshooting large-scale service provider networks using Nokia IS-IS. With this certification, you will be recognized as an expert in your field, which can lead to better job opportunities and career growth.

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The Nokia 4A0-112 exam is comprised of 60 multiple-choice questions and has a duration of 90 minutes. To prepare for 4A0-112 exam, candidates must have a thorough understanding of the principles and concepts of the IS-IS routing protocol, as well as the skills necessary to configure, troubleshoot, and optimize its performance. Nokia provides resources, such as official training courses and guides, to help candidates prepare for the Nokia 4A0-112 Exam.

Nokia IS-IS Routing Protocol Sample Questions (Q41-Q46):

NEW QUESTION # 41
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 and the branch offices both have specific static routes.
B. The head office has a specific static route and the branch office has a default route.
C. The head office has a default route and the branch office has a specific static route.
D. The head office and the branch office both have default routes.

Answer: C

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 # 42
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 L2 routers. Routers R3 and R4 are L1 routers.
C. All four routers are L1/L2.
D. Routers R1 and R2 are L1/L2 routers. Routers R3 and R4 are L1 routers.

Answer: D

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 # 43
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 floods a copy to its neighbors on other interfaces.
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 acknowledges it with a PSNP.
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 # 44
When using IS-IS in native mode for routing in a dual-stack IPv4/IPv6 environment, which of the following statements is FALSE?

A. In a multi-area environment, the SPF algorithm needs to be run four times on each L1/L2 router.
B. All links are assumed to be IPv4- and IPv6-capable.
C. It may lead to traffic black-holing if not properly designed.
D. The same topology information is used to calculate the shortest path tree for both IPv4 and IPv6.

Answer: A

Explanation:
In a dual-stack IPv4/IPv6 IS-IS environment, the SPF (Shortest Path First) algorithm is only run once per router for each protocol (IPv4 or IPv6). The topology is shared, but the SPF calculations for IPv4 and IPv6 are separate. This means that the SPF algorithm will run twice (once for IPv4 and once for IPv6) for each L1/L2 router, not four times.

NEW QUESTION # 45
Which of the following statements about router interfaces on a Nokia 7750 SR is FALSE?

A. The system interface exists by default.
B. They can be assigned IPv4 and/or IPv6 addresses.
C. They can be used in pairs on the same subnet for redundancy.
D. They can be logical or physical.

Answer: C

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 # 46
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