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GATE | GATE-CS-2005 | Question 26
  • Last Updated : 11 Sep, 2014

In a network of LANs connected by bridges, packets are sent from one LAN to another through intermediate bridges. Since more than one path may exist between two LANs, packets may have to be routed through multiple bridges. Why is the spanning tree algorithm used for bridge-routing?
(A) For shortest path routing between LANs
(B) For avoiding loops in the routing paths
(C) For fault tolerance

(D) For minimizing collisions


Answer: (B)

Explanation: The main idea for using Spanning Trees is to avoid loops. See Spanning Tree Protocol for more details.

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