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Nokia 4A0-112 Exam Questions
- Topic 1: IP Routing Review: This section measures the skills of Network Engineers and covers the fundamentals of IP routing. Candidates will learn about the basics of IP routing, how to populate the routing table and the concept of Equal-Cost Multipath Routing (ECMP). The module also discusses route redistribution and filtering using policies, as well as the architecture of the Nokia 7750 SR. Additionally, candidates will understand the IP packet header format, IP addressing, and Layer-3 interfaces on a Nokia 7750 SR.
- Topic 2: Static Routes: In this section, the exam focuses on Network Engineers and defines the characteristics of static routes. Candidates will learn about failure detection options associated with static routes and will also explore IPv6 static routes. Understanding these concepts is crucial for effective network management.
- Topic 3: Interior Gateway Protocols: This section is aimed at Network Analysts and provides an overview of interior gateway protocols. Candidates will study distance vectors, link-state protocols, and the shortest path first algorithm. The module also covers link-state protocol message flooding and optimizations, which are essential for efficient routing within networks.
- Topic 4: Intermediate System-to-Intermediate System Routing Protocol (IS-IS): Targeted at IS-IS Network Engineers, this section covers the basics of IS-IS. Candidates will learn about hierarchy in a multi-area IS-IS domain, IS-IS message types, adjacency formation, and database synchronization. The module also includes advertising link-state information in single-area and multi-area IS-IS networks, route leaking, summarization, and advertising external prefixes into IS-IS.
Free Nokia 4A0-112 Exam Actual Questions
Note: Premium Questions for 4A0-112 were last updated On Mar. 27, 2025 (see below)
Which of the following statements about the IP forwarding process on a router is TRUE?
During the IP forwarding process, routers use the routing table to determine the next hop based on the destination IP address. The source IP address is not directly involved in the lookup process for forwarding.
The ARP table is used to map IP addresses to MAC addresses, specifically for resolving the MAC address of the next hop (destination MAC address) for forwarding packets within the local network.
When multiple routing protocols offer a route for the same prefix, what part of the router is in charge of deciding which route to make active?
The routing table manager (RTM) is responsible for selecting the best route when multiple routing protocols provide a route for the same destination prefix. It makes the decision on which route to add to the routing table based on the administrative distance, metric, and other criteria.
Which of the following statements about the IP forwarding process on a router is TRUE?
During the IP forwarding process, routers use the routing table to determine the next hop based on the destination IP address. The source IP address is not directly involved in the lookup process for forwarding.
The ARP table is used to map IP addresses to MAC addresses, specifically for resolving the MAC address of the next hop (destination MAC address) for forwarding packets within the local network.
When multiple routing protocols offer a route for the same prefix, what part of the router is in charge of deciding which route to make active?
The routing table manager (RTM) is responsible for selecting the best route when multiple routing protocols provide a route for the same destination prefix. It makes the decision on which route to add to the routing table based on the administrative distance, metric, and other criteria.
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?
Based on the IPv6 route table output for R3 and R4, we can see that the routers have remote routes listed as 'Remote ISIS', indicating that the route is being advertised from a different area (area 49.01 or 49.02). This is a sign of route leaking, where routes from one area are being shared across areas.
The routes from R3 (level-1 router) are being advertised to R4 (level-1 router), and vice versa, with ISIS as the protocol. This implies that there is route leaking configured to allow information to pass between areas.
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