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4A0-112 Testking Exam Questions - Latest 4A0-112 Exam Labs

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Nokia 4A0-112 certification exam is designed for professionals who want to validate their expertise in configuring, managing, and troubleshooting the Nokia IS-IS (Intermediate System to Intermediate System) routing protocol. Nokia IS-IS Routing Protocol certification exam is ideal for network engineers, system architects, and IT professionals who work with Nokia routers and switches in their organizations. The Nokia 4A0-112 certification will validate your knowledge and skills in implementing and maintaining the IS-IS protocol, understanding the various IS-IS components, and configuring the Nokia network to support IS-IS routing.

Nokia 4A0-112 certification exam is designed for networking professionals who want to validate their skills and knowledge of the Nokia IS-IS routing protocol. Nokia IS-IS is a widely used routing protocol in large-scale service provider networks, and possessing this certification can help advance your career in the networking field.

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.

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Nokia IS-IS Routing Protocol Sample Questions (Q14-Q19):

NEW QUESTION # 14
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 office both have default routes.
B. The head office and the branch offices both have specific static routes.
C. The head office has a default route and the branch office has a specific static route.
D. The head office has a specific static route and the branch office has a default route.

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 # 15
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-R2-R5-R6).
B. Router R6 to router R3 will follow (R6-R5-R2-R3). Router R3 to router R6 will follow (R3-R2-R5-R6).
C. Router R6 to router R3 will follow (R6-R5-R2-R3). Router R3 to router R6 will follow (R3-R4-R7-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: B

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 # 16
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 # 17
What is the replacement for ARP in IPv6?

A. Router discovery procedures.
B. Stateless address auto-configuration procedures.
C. Neighbor discovery procedures.
D. Duplicate address detection 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 # 18
For a link-state routing protocol, which of the following statements about link-state updates is FALSE?

A. The age value is updated as the link-state update is flooded throughout the network and when it is in the link-state database
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 link-state update reaches its maximum age on a router, the router will flood that update to its neighbors.
D. When a router detects that a link-state update has reached its maximum age, it will request a new update from the source router.

Answer: C

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 # 19
......

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