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Nokia 4A0-112 certification exam is an essential step for network professionals seeking to validate their skills and knowledge in implementing and configuring IS-IS routing protocol in Nokia networks. With the availability of comprehensive training resources, candidates can prepare effectively for the exam and enhance their career prospects in the networking industry.
Nokia 4A0-112 exam is a certification exam that focuses on the Nokia IS-IS routing protocol. 4A0-112 exam is designed for network engineers and professionals who are interested in learning more about the Nokia IS-IS routing protocol and want to validate their proficiency in operating and configuring the protocol. 4A0-112 Exam is designed to test the candidate's knowledge and skills in various areas of the Nokia IS-IS routing protocol, including network design, implementation, and troubleshooting.
Nokia 4A0-112 exam is an ideal certification for IT professionals looking to enhance their knowledge and skills in network routing technologies. By passing the exam, candidates can demonstrate their proficiency in designing, implementing, and managing networks using Nokia's IS-IS routing protocol. With the growing demand for network professionals who are well-versed in routing protocols, this certification can open up new career opportunities in the field of networking.
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Nokia IS-IS Routing Protocol Sample Questions (Q30-Q35):
NEW QUESTION # 30
Which component of the Nokia 7750 SR is in charge of performing the longest prefix match lookup on packets that arrive on the physical interfaces?
- A. Switch Fabric (SF)
- B. Media Dependent Adapter (MDA)
- C. Control Processing Module (CMP)
- D. Input/Output Module (IOM)
Answer: D
Explanation:
The Input/Output Module (IOM) is responsible for performing the longest prefix match (LPM) lookup on packets that arrive at the physical interfaces. The IOM performs this function by examining the destination IP address of incoming packets and using the routing table to determine the best match.
NEW QUESTION # 31
A router running a link-state routing protocol detects that one of its neighbors is no longer connected to it. The router generates a new link-state advertisement to inform other routers of the topology change. Which of the following is NOT an action that is triggered by this event?
- A. Every router that receives the new link-state advertisement updates its age field before forwarding it.
- B. If a router receives multiple copies of the new link-state advertisement, it will simply ignore all copies received after the first one.
- C. Every router that receives the new link-state advertisement runs the SPF algorithm to recalculate its shortest-path tree and its forwarding database.
- D. If a router receives the new link-state advertisement, it acknowledges it, stores it, and forwards it to its own neighbors.
Answer: A
Explanation:
When a router receives a link-state advertisement (LSA), it does not update the age field before forwarding it. The age field in an LSA is typically updated by the originating router or during the process of forwarding the LSA within the network. Routers do not modify the age field upon receiving and forwarding an LSA.
NEW QUESTION # 32
Refer to the exhibit.

All routers in the diagram are running a link-state routing protocol. Before the link failure, all routers have operational adjacencies with each other and there is a BFD session between routers R1 and R3. After the link failure, which of the following affects the routing protocol's convergence time?
- A. The value of the routing protocol hello timers on routers R1 and R3.
- B. The value of the BFD transmit interval, receive interval and multiplier settings on routers R1 and R3.
- C. The value of the Ethernet hello timers on the switches.
- D. The time taken by the switches to detect that the physical ports are down.
Answer: B
Explanation:
BFD (Bidirectional Forwarding Detection) is used to detect link failures quickly and helps improve convergence time in link-state routing protocols. The BFD session between routers R1 and R3 allows them to detect the failure of the link between them more quickly than the regular routing protocol hello timers. The transmit interval, receive interval, and multiplier settings determine how fast BFD detects a failure and triggers the routing protocol to converge, which directly impacts the convergence time.
NEW QUESTION # 33
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 forwarding information base (FIB)
- B. The equal cost multipath configuration
- C. The routing table manager (RTM)
- D. The routing information base (RIB)
Answer: C
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 # 34
Which of the following is NOT a function of the control plane a router?
- A. To utilize the forwarding tables to forward data packets towards their destination.
- B. To determine the best way to forward packets.
- C. To establish routing paths to deliver packets from source to destination and to reestablish them in case of failure.
- D. To exchange signaling messages with other routers.
Answer: A
Explanation:
The data plane (or forwarding plane) is responsible for actually forwarding the data packets. It uses the information stored in the forwarding table to determine how to move packets from one interface to another toward their destination.
NEW QUESTION # 35
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