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Computer Networks
Bgp
Q
Why border gateway protocol is called as path vector protocol?
AA. Router maintains table for each path
BB. Router keeps track of the path
CC. Router defines a path with prior knowledge
DD. Router selects the shortest path
Correct Answer:
B. B. Router keeps track of the path
Explanation:
Basically, intra-domain routing maintains the table for each destination with least cost or distance. But in BGP, metric is policy, so every router keeps track of the path like next hop and AS path. This path vector protocol avoids looping using path tracking.
