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Nokia - 4A0-112–Efficient Reliable Exam Pdf

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Nokia 4A0-112 Exam is designed to test the knowledge and skills of networking professionals in the Nokia IS-IS routing protocol. The IS-IS protocol is widely used in large and complex networks, particularly in service provider environments. As such, the Nokia 4A0-112 exam is an important certification for professionals seeking to advance their career in network engineering or architecture.

Nokia 4A0-112 exam covers a wide range of topics related to IS-IS, including its basic principles, configuration, and troubleshooting. You will need to have a good understanding of how IS-IS works, including its link-state routing algorithm and the different types of IS-IS packets used to exchange information between routers. You will also need to be familiar with the various configuration options available in IS-IS, such as the different types of network topologies and the use of metrics to determine the best path for traffic.

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Nokia IS-IS Routing Protocol Sample Questions (Q32-Q37):

NEW QUESTION # 32
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 deciding at line-rate speed which packets will be dropped and which ones will be forwarded.
D. It is the process of passing routing information from one routing domain to another, which usually means from one routing protocol to another.

Answer: D

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 # 33
Which of the following is a valid alternative representation of the IPv6 address
2001:0da8:0000:0000:0024:0000:4ab9:0300?

A. 2001:da8::24::4ab9:300
B. 2001:0da8::0024:0000:4ab9:03
C. 2001:da8::24:0:4ab9:300
D. 2001:da8::0:24::4ab9:300

Answer: B

Explanation:
In IPv6, consecutive sections of zeros can be abbreviated with a double colon (::) once in an address. Also, leading zeros in each hextet (group of four hexadecimal digits) can be removed.
The original address is 2001:0da8:0000:0000:0024:0000:4ab9:0300.
Removing leading zeros and applying the abbreviation:

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: B

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
Which of the following statements about the IP forwarding process on a router is TRUE?

A. It uses the routing table to find a match for the source IP address.
B. It uses the ARP table to find a match for the source MAC address.
C. It uses the routing table to find a match for the destination IP address.
D. It uses the ARP table to find a match for the destination MAC address.

Answer: C

Explanation:
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.

NEW QUESTION # 36
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 R6 to router R3, and from router R3 to router R6?

A. Router R6 to router R3 will follow (R6-R5-R2-R3). Router R3 to router R6 will follow (R3-R2-R5-R6).
B. Router R6 to router R3 will follow (R6-R5-R2-R3). Router R3 to router R6 will follow (R3-R4-R7-R5-R6).
C. Router R6 to router R3 will follow (R6-R5-R7-R4-R3). Router R3 to router R6 will follow (R3-R4-R7-R5-R6).
D. Router R6 to router R3 will follow (R6-R5-R2-R3). Router R3 to router R6 will follow (R3-R4-R2-R5-R6).

Answer: A

Explanation:
The metric values between the routers dictate the routing paths, and IS-IS will calculate the shortest path based on these values.
R6 to R3: The path from R6 to R3 will go through R5 and R2, as this route has the least cumulative metric (10 + 10 + 15 = 35).
R3 to R6: The reverse path from R3 to R6 will follow R3 → R2 → R5 → R6 because this route is also the shortest with a total metric of 10 + 10 + 10 = 30.

NEW QUESTION # 37
......

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