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Nokia 4A0-112 exam is designed to test the proficiency of IT professionals in the implementation and configuration of the Nokia IS-IS Routing Protocol. The Nokia IS-IS Routing Protocol is a widely used protocol in the networking industry, and it is essential for the smooth functioning of large-scale networks. 4A0-112 exam focuses on various aspects of the protocol, including design, implementation, and troubleshooting.
Nokia 4A0-112 (Nokia IS-IS Routing Protocol) Exam is designed to test candidates' knowledge and understanding of the InterDomain Routing Protocol (IDRP) and Internet Engineering Task Force (IETF) standards-based Interior Gateway Protocol (IGP), Intermediate System-to-Intermediate System (IS-IS) routing protocol. Nokia's IS-IS routing protocol enables the scalable and efficient routing of network traffic through a hierarchical network infrastructure. As such, it is used extensively in large enterprise and service provider networks.
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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NEW QUESTION # 27
A router is trying to establish an IS-IS adjacency with the DIS on a broadcast link. What event causes the adjacency to change from "Initializing" to "UP"?
Answer: A
Explanation:
The process of establishing an IS-IS adjacency on a broadcast link involves several steps, and the transition from the Initializing state to the UP state occurs when both routers exchange sufficient information to confirm they have a consistent view of the link-state database.
The CSNP (Complete Sequence Number PDU) packet is used to advertise the list of LSPs in the router's link-state database. When a router receives the first CSNP from the DIS (Designated Intermediate System) that lists the LSPs in the DIS's database, it indicates that the router has enough information to establish the adjacency and synchronize its database.
NEW QUESTION # 28
When a router performs the SPF calculation, which router is used as the root of the shortest path tree?
Answer: C
Explanation:
When a router performs the SPF (Shortest Path First) calculation, it uses itself as the root of the shortest path tree (SPT). This router computes the shortest paths to all other routers in the network, treating itself as the origin and calculating the paths based on its view of the network.
NEW QUESTION # 29
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?
Answer: A
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 # 30
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?
Answer: D
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 # 31
Refer to the exhibit.
A static route has been configured on router R1 to reach the PC at 139.120.121.2.
What might be causing the ping to fail?
Answer: C
Explanation:
In the configuration on router R1, the static route is defined with the next-hop IP address of 139.120.121.1.
However, the next-hop IP address 139.120.121.1 does not belong to the same subnet as the directly connected interface on R1, which is 172.31.1.1/30. For the static route to work properly, the next-hop IP address must be reachable via a directly connected interface, meaning it must be within the same subnet.
Therefore, this mismatch in subnet adjacency is likely causing the failure to reach the destination (139.120.121.2).
NEW QUESTION # 32
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