4A0-112 VALID TEST SYLLABUS - FREE PDF 4A0-112 - FIRST-GRADE NEW NOKIA IS-IS ROUTING PROTOCOL LEARNING MATERIALS

4A0-112 Valid Test Syllabus - Free PDF 4A0-112 - First-grade New Nokia IS-IS Routing Protocol Learning Materials

4A0-112 Valid Test Syllabus - Free PDF 4A0-112 - First-grade New Nokia IS-IS Routing Protocol Learning Materials

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2025 4A0-112 Valid Test Syllabus | Valid New 4A0-112 Learning Materials: Nokia IS-IS Routing Protocol

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Nokia 4A0-112 certification exam is an advanced-level exam that requires candidates to have a solid understanding of the concepts and principles of the Nokia IS-IS routing protocol. Candidates are expected to have experience in designing, configuring, and maintaining IS-IS networks. 4A0-112 Exam covers a wide range of topics, including IS-IS architecture, routing policies, traffic engineering, and network scalability.

Nokia IS-IS Routing Protocol Sample Questions (Q31-Q36):

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?

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

Answer: A

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
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. Input/Output Module (IOM)
  • B. Media Dependent Adapter (MDA)
  • C. Switch Fabric (SF)
  • D. Control Processing Module (CMP)

Answer: A

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 # 33
There are several differences between IS-IS Hello packets used on broadcast interfaces and on point-to-point interfaces.
Which of the following statements is FALSE?

  • A. The multicast MAC addresses to which the Hello messages are sent are different on broadcast interfaces and on point-to-point interfaces.
  • B. The neighbors are identified using their interface MAC addresses on broadcast Hello messages and using their system IDs on point-to-point Hello messages.
  • C. Broadcast Hello messages identify the elected designed IS (DIS) and point-to-point Hello messages do not.
  • D. On broadcast interfaces there are different Hello packet types for level-1 and level-2 adjacencies, whereas on point-to-point interfaces there is a single Hello packet type.

Answer: B

Explanation:
In both broadcast and point-to-point interfaces, IS-IS routers identify neighbors using system IDs, not interface MAC addresses. The system ID is a unique identifier assigned to each router, and it is used to identify neighbors in both types of interfaces.


NEW QUESTION # 34
Refer to the exhibit.

All routers in the diagram are running an interior gateway protocol (IGP) and have been configured with an ECMP value of 4. Router R5 advertises the prefix 192.168.3.0/24 using the IGP. Assuming all links have the same cost, how many entries for prefix 192.168.3.0/24 will be in router R3's routing table?

  • A. 0
  • B. 1
  • C. 2
  • D. 3

Answer: A

Explanation:
In this scenario, the routers are configured with an Equal-Cost Multi-Path (ECMP) value of 4, meaning they can utilize up to 4 equal-cost paths to reach a destination. Since Router R5 is advertising the 192.168.3.0/24 prefix and all links have the same cost, router R3 will receive multiple routes to reach this destination.
Given that all the routers (R1, R2, R3, R4, and R5) are connected in a way that can support multiple equal-cost paths, and assuming ECMP is set to 4, the routing table on Router R3 will have up to 4 entries for the prefix 192.168.3.0/24.
Thus, Router R3's routing table will contain 4 entries for the prefix 192.168.3.0/24.


NEW QUESTION # 35
When using IS-IS in native mode for routing in a dual-stack IPv4/IPv6 environment, which of the following statements is FALSE?

  • A. In a multi-area environment, the SPF algorithm needs to be run four times on each L1/L2 router.
  • B. All links are assumed to be IPv4- and IPv6-capable.
  • C. It may lead to traffic black-holing if not properly designed.
  • D. The same topology information is used to calculate the shortest path tree for both IPv4 and IPv6.

Answer: A

Explanation:
In a dual-stack IPv4/IPv6 IS-IS environment, the SPF (Shortest Path First) algorithm is only run once per router for each protocol (IPv4 or IPv6). The topology is shared, but the SPF calculations for IPv4 and IPv6 are separate. This means that the SPF algorithm will run twice (once for IPv4 and once for IPv6) for each L1/L2 router, not four times.


NEW QUESTION # 36
......

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