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Nokia 4A0-100 Exam - Topic 6 Question 131 Discussion

Which of the following types of information is used to calculate the Shortest Path Tree (SPT)?
C) Network topology
A) Copies of the neighbors' routing tables
B) Hop count to each potential destination
D) IP reachability

Nokia 4A0-100 Exam - Topic 6 Question 131 Discussion

Actual exam question for Nokia's 4A0-100 exam
Question #: 131
Topic #: 6
[All 4A0-100 Questions]

Which of the following types of information is used to calculate the Shortest Path Tree (SPT)?

Show Suggested Answer Hide Answer
Suggested Answer: C

The Shortest Path Tree (SPT) is calculated by Link-State routing protocols like OSPF and IS-IS using:

A complete map of the network topology.

Each router uses algorithms like Dijkstra's to compute the shortest paths to all destinations.

Option C is correct -- full network topology is used.

Option A refers to Distance Vector methods.

Option B and D are results of topology analysis but not the input used.


Nokia Routing Protocols Guide -- Section: ''SPT and Link-State Behavior''

RFC 2328 -- OSPF Specification

by Arminda at Aug 18, 2026, 01:10 AM

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Pearly
I think the Shortest Path Tree relies on the network topology, but I'm not entirely sure if hop count plays a role too.
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