LATEST 4A0-112 STUDY MATERIALS - 4A0-112 RELIABLE TEST PREP

Latest 4A0-112 Study Materials - 4A0-112 Reliable Test Prep

Latest 4A0-112 Study Materials - 4A0-112 Reliable Test Prep

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Tags: Latest 4A0-112 Study Materials, 4A0-112 Reliable Test Prep, 4A0-112 Dumps Cost, Reliable 4A0-112 Test Bootcamp, Exam 4A0-112 Tests

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Nokia 4A0-112 certification exam covers a wide range of topics related to the IS-IS routing protocol, including the fundamentals of IS-IS, IS-IS routing and topology, IS-IS protocol operation, and IS-IS network design. Candidates must demonstrate their knowledge of IS-IS configuration, IS-IS path selection, and IS-IS network convergence. 4A0-112 exam also covers the integration of IS-IS with other routing protocols such as OSPF and BGP.

To successfully pass the Nokia 4A0-112 exam, candidates must demonstrate an excellent grasp of key concepts such as IS-IS routing domains, hierarchical network design, network convergence, link-state and distance-vector routing protocols and other routing protocol-specific features. Additionally, candidates must be able to configure, manage and troubleshoot IS-IS protocol implementations within complex network topologies across diverse routing domains. The Nokia 4A0-112 Exam is a high-level certification that reaffirms the candidate's status as an expert in IS-IS routing protocol and network management.

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Nokia 4A0-112 Reliable Test Prep - 4A0-112 Dumps Cost

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Nokia is a well-known brand in the telecommunications industry, and it offers a wide range of products and services. Among its offerings is the Nokia 4A0-112 exam, which covers the Nokia IS-IS routing protocol. 4A0-112 Exam is designed to test the knowledge and skills of networking professionals who work with Nokia's products and services.

Nokia IS-IS Routing Protocol Sample Questions (Q22-Q27):

NEW QUESTION # 22
Which of the following statements about IS-IS is FALSE?

  • A. A level-1 router forwards traffic to other areas through the nearest I eve I-1/1 eve I-2 router.
  • B. A router becomes level-2 when it is associated with the backbone area.
  • C. In IS-IS, routers are associated with an area, not the interfaces.
  • D. IS-IS uses the concept of level-1 and level-2 routers to implement hierarchy.

Answer: C

Explanation:
In IS-IS, routers are actually associated with interfaces rather than the entire router being associated with a single area. A router can have interfaces in multiple areas, and it is the interface's configuration that determines which area it belongs to.


NEW QUESTION # 23
What is the replacement for ARP in IPv6?

  • A. Duplicate address detection procedures.
  • B. Neighbor discovery procedures.
  • C. Stateless address auto-configuration procedures.
  • D. Router discovery procedures.

Answer: B

Explanation:
In IPv6, the Neighbor Discovery Protocol (NDP) replaces the Address Resolution Protocol (ARP) used in IPv4. NDP is responsible for several functions, including resolving IP addresses to MAC addresses (similar to ARP), detecting duplicate IP addresses, and discovering other devices on the network.


NEW QUESTION # 24
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"?

  • A. Receiving the first CSNP packet from the DIS that lists the LSPs in the DIS's link-state database.
  • B. Receiving a CSNP packet from the DIS acknowledging the last transmitted LSP.
  • C. Receiving a Hello packet from the DIS that contains the local router's own MAC address in the neighbor list.
  • D. Receiving the last LSP requested from the DIS.

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 # 25
On a broadcast interface, an IS-IS router receives an LSP that is newer than the one on its database. Which of the following statements best describes the actions taken by the router as a consequence?

  • A. The router updates its database with the LSP and floods a copy to its neighbors on other interfaces.
  • B. The router updates its database with the LSP and acknowledges it with a PSNP.
  • C. The router sends back a copy of the LSP from its database to its neighbor.
  • D. The router updated its database with the LSP, acknowledges the LSP with a PSNP, and floods a copy to its neighbors on other interfaces.

Answer: D

Explanation:
When an IS-IS router receives a newer LSP (Link-State PDU) than the one already in its database, it takes the following actions:
Updates its link-state database with the new LSP.
Acknowledges the LSP with a PSNP (Partial Sequence Number PDU), which is sent to the router that originated the LSP, confirming the receipt of the newer LSP.
Floods a copy of the updated LSP to its neighbors on other interfaces to ensure all routers in the network have the updated topology information.


NEW QUESTION # 26
Two IS-IS neighboring routers are trying to establish an adjacency, but the interface has been configured as broadcast on one of them and as point-to-point on the other. Why is the adjacency not established?

  • A. The routers discard the received Hello messages because they are not the expected type: LAN Hello vs point-to-point Hello.
  • B. The routers do not receive each other's Hello messages because they listen for messages transmitted to different multicast MAC addresses.
  • C. The routers do not agree on the result of the DIS election.
  • D. The routers do not receive each other's Hello messages because they listen for messages transmitted to different multicast IP addresses.

Answer: A

Explanation:
IS-IS routers use different types of Hello messages depending on whether the interface is configured as a broadcast (LAN) or point-to-point (P2P) link.
On a broadcast network (e.g., Ethernet), IS-IS routers use LAN Hello packets to establish adjacencies.
On a point-to-point link, IS-IS uses point-to-point Hello packets.
If one router is configured for a broadcast interface and the other for point-to-point, they will exchange incompatible Hello packets, and as a result, neither router will accept the other's Hello messages, preventing the adjacency from being established.


NEW QUESTION # 27
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