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4A0-112 Simulation Questions - 4A0-112 Exam Discount Voucher

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Nokia 4A0-112 exam is a comprehensive certification that covers a wide range of topics related to the IS-IS routing protocol. Some of these topics include the IS-IS routing algorithm, network topology, IS-IS configuration options, and troubleshooting techniques. Candidates who pass the exam can demonstrate their ability to manage complex networks using IS-IS, and are more likely to be sought after by organizations looking for qualified network administrators.

IS-IS is a popular routing protocol used in service provider networks, and it is designed to operate in large-scale networks. The protocol is used to exchange routing information between routers and to determine the best path for packet forwarding. The Nokia 4A0-112 Certification Exam provides a comprehensive assessment of an individual's understanding of the IS-IS protocol and their ability to configure and troubleshoot it in real-world scenarios.

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Nokia 4A0-112 certification exam is intended for network engineers, network architects, and network administrators who are responsible for designing, implementing, and maintaining network infrastructures that use the Nokia IS-IS routing protocol. 4A0-112 exam is also suitable for professionals who want to enhance their knowledge and skills in routing protocols and improve their career prospects in the networking industry. Passing the Nokia 4A0-112 Exam validates the candidate's expertise in the Nokia IS-IS routing protocol, which is widely used in Service Provider and Enterprise networks. It also demonstrates the candidate's commitment to professional development and continuous learning.

Nokia IS-IS Routing Protocol Sample Questions (Q10-Q15):

NEW QUESTION # 10
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 Ethernet hello timers on the switches.
B. The value of the BFD transmit interval, receive interval and multiplier settings on routers R1 and R3.
C. The value of the routing protocol hello timers on routers R1 and R3.
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 # 11
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 default route and the branch office has a specific static route.
C. The head office and the branch office both have default routes.
D. The head office has a specific static route and the branch office has a default route.

Answer: B

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 # 12
What do the address resolution protocol (ARP) for IPv4 and the neighbor discovery procedures for IPv6 have in common?

A. Both resolve a host device's IP address using its MAC address.
B. Both detect duplicate IP address assignments.
C. Both detect duplicate MAC address assignments.
D. Both resolve a host device's MAC address using its IP address.

Answer: D

Explanation:
ARP for IPv4 and Neighbor Discovery Protocol (NDP) for IPv6 are both used to map a device's IP address to its MAC address. This is essential for communication within a local network.
ARP is used in IPv4 networks, and NDP performs a similar function in IPv6 networks, ensuring devices can communicate effectively on the same network segment.

NEW QUESTION # 13
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?

A. The configured static route needs to be a default route.
B. The configured next hop does not belong to a subnet adjacent to R1.
C. Router R2 needs a static route to the PC.
D. Router R1 needs a static route to router R2.

Answer: B

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 # 14
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. The echo request arrives at the server but there is no path for the echo response to return to router R1.
B. Router R3 drops the echo request because it does not have subnet 10.4.100.0/24 in its routing table.
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: A

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 # 15
......

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