Dijkstra's Link State Algorithm - Advanced
Consider the incomplete 6-node network shown below, with the given link costs.
Consider the completed table below, which calculates the shortest distance to all nodes from Z:
================================================
| Node | Shortest distance from Z | Previous Node |
================================================
Z 0 n/a
W 1 Z
V 2 W
Y 2 Z
X 3 W
U 7 V
================================================
Question List
1. For link X, what is the cost associated with this link? If the answer can't be determined given the information, respond with 'n/a'
2. For link Y, what is the cost associated with this link? If the answer can't be determined given the information, respond with 'n/a'
Solution
1. Because the link is never used, we cannot determine the value of X, so the answer is n/a.
2. The prior node in the path to U is V, and we know the shortest distance of both U (7) and V (2), so 7 - 2 = 5 which is Y.
That's incorrect
That's correct
The answer was: n/a
The answer was: 5