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Nokia 4A0-112 exam is designed for professionals who are interested in obtaining the Nokia Service Routing Certification (SRC) in the field of Intermediate Routing. 4A0-112 exam validates the candidate's knowledge and skills in the intermediate level of the Nokia IS-IS Routing Protocol. 4A0-112 exam measures the candidate's ability to configure, troubleshoot, and manage intermediate-level routing protocols in the Nokia Service Router.

Nokia 4A0-112 certification exam is designed for network professionals who wish to demonstrate their expertise in the implementation and management of the Nokia IS-IS routing protocol. Nokia IS-IS Routing Protocol certification exam covers various concepts related to the Nokia IS-IS routing protocol, including its architecture, operation, configuration, and troubleshooting. 4A0-112 Exam is intended for individuals who have a good understanding of IP routing and are familiar with the basic principles of the TCP/IP protocol suite.

Nokia 4A0-112 certification exam assesses an individual's understanding and expertise in the Nokia IS-IS routing protocol. 4A0-112 exam is designed to validate the candidate's knowledge of the protocol's fundamentals, including its characteristics, design, and operation. 4A0-112 exam also evaluates the candidate's ability to configure and troubleshoot the Nokia IS-IS routing protocol effectively. Candidates who pass 4A0-112 exam demonstrate their ability to operate and maintain a network infrastructure using the Nokia IS-IS routing protocol.

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Nokia IS-IS Routing Protocol Sample Questions (Q36-Q41):

NEW QUESTION # 36
Refer to the exhibit.

Which of the following statements best describes the IS-IS domain to which the command output corresponds?

A. Single-area IS-IS domain with no broadcast interfaces.
B. Multi-area IS-IS domain with no broadcast interfaces.
C. Single-area IS-IS domain with broadcast interfaces.
D. Multi-area IS-IS domain with broadcast interfaces.

Answer: D

Explanation:
The output shows two levels of IS-IS databases: Level 1 (L1) and Level 2 (L2). This indicates that the domain is multi-area, as L1 routers are confined to a single area, while L2 routers can route between different areas. The presence of Level 1/Level 2 (L1/L2) routers also suggests that the domain spans multiple areas.
The LSP (Link-State PDU) entries show L1/L2 ATT attributes, which typically indicate that these routers are capable of routing both within their own area (Level 1) and across areas (Level 2), suggesting a multi-area design.
The IS-IS domain likely includes broadcast interfaces, as indicated by the "ATT" attribute (typically referring to the type of interface) and common IS-IS configuration practices on broadcast networks like Ethernet.

NEW QUESTION # 37
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 table manager (RTM)
B. The equal cost multipath configuration
C. The routing information base (RIB)
D. The forwarding information base (FIB)

Answer: A

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 # 38
Consider the exhibit.

All routers are running IS-IS with IPv6 support enabled. Based on the topology shown, and the route tables of routers R3 and R4, which of the following statements is TRUE?

A. Route leaking is configured on router R1 but not on router R2.
B. There is no route leaking configured on router R1 or router R2.
C. Route leaking is configured on both routers R1 and R2.
D. Route leaking is configured on router R2 but not on router R1.

Answer: C

Explanation:
Based on the IPv6 route table output for R3 and R4, we can see that the routers have remote routes listed as "Remote ISIS", indicating that the route is being advertised from a different area (area 49.01 or 49.02). This is a sign of route leaking, where routes from one area are being shared across areas.
The routes from R3 (level-1 router) are being advertised to R4 (level-1 router), and vice versa, with ISIS as the protocol. This implies that there is route leaking configured to allow information to pass between areas.

NEW QUESTION # 39
A routing domain uses a link-state routing protocol. Which of the following would NOT be an advantage of dividing the entire routing domain into areas?

A. Less-capable routers can be isolated from having to keep track of IP prefixes that are external to the local routing domain.
B. Route tables can be reduced by summarizing the IP prefixes advertised between areas.
C. Fewer routers are required to handle the same amount of traffic, as compared to a single-area domain.
D. Detailed topology information is only shared among routers within the same area, thus reducing the complexity of the SPF calculation.

Answer: C

Explanation:
Dividing a domain into areas typically does not reduce the number of routers needed to handle traffic. It is more focused on improving scalability, reducing the size of routing tables, and limiting the scope of SPF calculations, but it doesn't inherently reduce the number of routers required.

NEW QUESTION # 40
Refer to the exhibit.

Routers R1 through R4 are running an IGP in such a way that they have each other's system IP addresses in their routing tables. A static route is configured on router R1 so that it can reach subnetwork 10.4.100.0/24. The network administrator decides to use an indirect static route, as shown in the diagram. However, pinging the server from router R1 fails. What may be the problem in this case?

A. Router R3 drops the echo request because it does not have subnet 10.4.100.0/24 in its routing table.
B. The echo request arrives at the server but there is no path for the echo response to return to router R1.
C. Router R2 drops the echo request because it does not have subnet 10.4.100.0/24 in its routing table.
D. Router R1 drops the echo request because address 10.10.10.3 does not belong to an adjacent router.

Answer: B

Explanation:
The static route configured on router R1 uses an indirect next-hop, which is 10.10.10.3 (R3). While the echo request from R1 reaches the server through the IGP, the problem lies in the return path for the echo response.
The route 10.4.100.0/24 is reachable through R3, but there is no reciprocal route in R3's routing table that allows the response to flow back towards R1. This results in a failure to return the echo response to R1, causing the ping to fail.

NEW QUESTION # 41
......

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