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4A0-112 Reliable Exam Sample | 4A0-112 Exam Brain Dumps
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Nokia 4A0-112 exam covers a wide range of topics, including the fundamentals of the Nokia IS-IS Routing Protocol, the implementation of the protocol in large-scale networks, the configuration of the protocol for optimal performance, and troubleshooting common issues related to the protocol. 4A0-112 exam is designed to test the technical proficiency of candidates in various areas of the protocol and to ensure that they possess the necessary knowledge and skills to implement and configure the protocol in real-world scenarios.
Nokia 4A0-112 Exam is designed to test the proficiency of IT professionals in the implementation and configuration of the Nokia IS-IS Routing Protocol. The Nokia IS-IS Routing Protocol is a widely used protocol in the networking industry, and it is essential for the smooth functioning of large-scale networks. 4A0-112 exam focuses on various aspects of the protocol, including design, implementation, and troubleshooting.
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Nokia 4A0-112 Exam is a challenging certification that requires a strong foundation in networking concepts and protocols. Candidates must have a deep understanding of routing and switching technologies, as well as a solid grasp of network security and management practices. They should also have experience working with Nokia's networking solutions and be familiar with the company's product offerings, including the Nokia Service Router portfolio.
Nokia IS-IS Routing Protocol Sample Questions (Q33-Q38):
NEW QUESTION # 33
Which of the following definitions best describes route redistribution?
- A. It is the process of redirecting packets to be processed by an intermediate network function before allowing them to be forwarded to their intended final destination.
- B. It is the process of controlling which route advertisements received from routing peers are accepted and/or deciding which locally known prefixes are advertised to routing peers.
- C. It is the process of passing routing information from one routing domain to another, which usually means from one routing protocol to another.
- D. It is the process of deciding at line-rate speed which packets will be dropped and which ones will be forwarded.
Answer: C
Explanation:
Route redistribution is the process of sharing routing information between different routing protocols or routing domains. For example, a router might redistribute routes learned via OSPF into a BGP routing table or vice versa. This enables routers to exchange routing information even when they are using different routing protocols.
NEW QUESTION # 34
Consider the exhibit.
All routers are running IS-IS with IPv6 support enabled. Based on the topology shown, and the route tables of routers R3 and R4, which of the following statements is TRUE?
- A. Route leaking is configured on both routers R1 and R2.
- B. Route leaking is configured on router R2 but not on router R1.
- C. Route leaking is configured on router R1 but not on router R2.
- D. There is no route leaking configured on router R1 or router R2.
Answer: A
Explanation:
From the route tables of R3 and R4, we can see that remote routes are present, with R3 and R4 both having routes referencing routers in different areas (Area 49.01 and 49.02). These remote routes are characteristic of route leaking, which is the process of sharing routes between different IS-IS areas.
R3 has routes for R1, R2, and R4, which are in Area 49.01, suggesting that R1 and R2 have advertised their routes to R3, possibly due to route leaking.
R4 has similar routes for R2 and R3, indicating that R2 might have advertised its routes to R4.
This sharing of routes between areas is indicative of route leaking being configured on both R1 and R2, allowing these routes to be shared across the areas.
NEW QUESTION # 35
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 a CSNP packet from the DIS acknowledging the last transmitted LSP.
- B. Receiving the last LSP requested from the DIS.
- C. Receiving the first CSNP packet from the DIS that lists the LSPs in the DIS's link-state database.
- D. Receiving a Hello packet from the DIS that contains the local router's own MAC address in the neighbor list.
Answer: C
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 # 36
Refer to the exhibit.
Which of the following statements best describes the IS-IS domain to which the command output corresponds?
- A. Multi-area IS-IS domain with no broadcast interfaces.
- B. Single-area IS-IS domain with no broadcast interfaces.
- C. Multi-area IS-IS domain with broadcast interfaces.
- D. Single-area IS-IS domain with broadcast interfaces.
Answer: C
Explanation:
The output shows two levels of IS-IS databases: Level 1 (L1) and Level 2 (L2). This indicates that the domain is multi-area, as L1 routers are confined to a single area, while L2 routers can route between different areas. The presence of Level 1/Level 2 (L1/L2) routers also suggests that the domain spans multiple areas.
The LSP (Link-State PDU) entries show L1/L2 ATT attributes, which typically indicate that these routers are capable of routing both within their own area (Level 1) and across areas (Level 2), suggesting a multi-area design.
The IS-IS domain likely includes broadcast interfaces, as indicated by the "ATT" attribute (typically referring to the type of interface) and common IS-IS configuration practices on broadcast networks like Ethernet.
NEW QUESTION # 37
Refer to the exhibit.
In the diagram, all routers are using IS-IS as their routing protocol. The number next to each link is its metric value.
What path will traffic follow from router R1 to router R7, and from router R7 to router R1?
- A. Router R1 to router R7 will follow (R1-R2-R4-R6-R7). Router R7 to router R1 will follow (R7-R6-R4-R2-R1).
- B. Router R1 to router R7 will follow (R1-R2-R4-R6-R7). Router R7 to router R1 will follow (R7-R6-R5-R3-R1).
- C. Router R1 to router R7 will follow (R1-R3-R5-R6-R7). Router R7 to router R1 will follow (R7-R6-R5-R3-R1).
- D. Router R1 to router R7 will follow (R1-R3-R5-R6-R7). Router R7 to router R1 will follow (R7-R6-R4-R2-R1).
Answer: A
Explanation:
From R1 to R7: The path will be R1 → R2 → R4 → R6 → R7 because this path has the least cumulative metric of 10 + 10 + 10 + 10 = 40.
From R7 to R1: The reverse path will follow R7 → R6 → R4 → R2 → R1 because it is the shortest return path with the same metrics.
NEW QUESTION # 38
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