hortest Path Problem Find the shortest path from

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
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Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Shortest Path Problem

Find the shortest path from a to z using Dijkstra’s algorithm.

b
d
6
5
4
a
2
8
8
1
10
e
00
Transcribed Image Text:b d 6 5 4 a 2 8 8 1 10 e 00
Expert Solution
Step 1

Algorithm:

Both directed and undirected graph

All edge must have non-negative weight

The graph must be clearly connected

Remove all self-loop and parallel edge

It is applied to the weight graph.

STEPS:

The first step of Dijkstra's algorithm is to set all the costs of each vertex that is not original to infinity.

So the cost of b c d e and z are initially set to infinity

And the cost of a is initially set to zero then iteratively which we use the loop.

We will select one vertex that has the lowest cost and includes that vertex into a set of paths

After the vertex is included we will update all the other vertices the cause of all the other vertices.

So it reflects the choice that you make so for the six vertices.

You can see that 'a' has the lowest cost so we initially select a to set when a is selected to the set we have to update neighbors of 'a' which are B and C.

We have to make the cost of vertex should be lower how much lower is that depending upon how much depending upon the existing count.

Computer Engineering homework question answer, step 1, image 1

Then the shortest path from a to z is a,c,b,d,e,z with a length of 13

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