PASS GUARANTEED 2025 HIGH HIT-RATE NOKIA 4A0-112: STUDY NOKIA IS-IS ROUTING PROTOCOL MATERIAL

Pass Guaranteed 2025 High Hit-Rate Nokia 4A0-112: Study Nokia IS-IS Routing Protocol Material

Pass Guaranteed 2025 High Hit-Rate Nokia 4A0-112: Study Nokia IS-IS Routing Protocol Material

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Nokia IS-IS Routing Protocol Sample Questions (Q16-Q21):

NEW QUESTION # 16
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 has a specific static route and the branch office has a default route.
  • 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 and the branch offices both have specific static routes.

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 # 17
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 MAC address using its IP address.
  • B. Both resolve a host device's IP address using its MAC address.
  • C. Both detect duplicate MAC address assignments.
  • D. Both detect duplicate IP address assignments.

Answer: A

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 # 18
A new router is added to a broadcast network. What does IS-IS use as the tiebreaker for selecting the DIS if the priorities are the same?

  • A. The router with the highest interface MAC address.
  • B. The existing DIS remains the DIS.
  • C. The router with the highest system ID.
  • D. The Hello packet with the highest sequence number.

Answer: C

Explanation:
In IS-IS, the Designated Intermediate System (DIS) is responsible for certain tasks on broadcast networks, such as generating link-state advertisements and acting as the central point for flooding information.


NEW QUESTION # 19
Refer to the exhibit.

Routers R1, R2, R3, and R4 are running IS-IS. Assuming all interfaces are added to IS-IS as point-to-point and no commands are issued at the interface level to restrict adjacencies, which of the following statements is TRUE?

  • A. All four routers are L1/L2.
  • B. Routers R1 and R2 are L1/L2 routers. Routers R3 and R4 are L1 routers.
  • C. Routers R1 and R2 are L2 routers. Routers R3 and R4 are L1 routers.
  • D. Routers R1 and R2 are L2 routers. Routers R3 and R4 are L1/L2 routers.

Answer: B

Explanation:
From the output, we can see that the usage column indicates whether a router is operating as an L1 or L2 router:
The L1/L2 designations refer to whether the routers participate in both Level 1 and Level 2 of IS-IS:
In this case, R1 and R2 are L2 routers, and R3 and R4 are L1 routers.


NEW QUESTION # 20
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?

  • A. 0
  • B. 1
  • C. 2
  • D. 3

Answer: D

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 # 21
......

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