1 votes 1 votes What is optimal and Estimated Cost here, and why eliminate option A and C, why option B is correct. Computer Networks cbt-2019 computer-networks distance-vector-routing + – Raja Rawal asked Jan 15, 2019 retagged Jun 26, 2019 by Cristine Raja Rawal 408 views answer comment Share Follow See 1 comment See all 1 1 comment reply adarsh_1997 commented Jan 15, 2019 reply Follow Share @Raja Rawal i think it is trying to say that each step we exhange distance vector and since while exchanging distance vector we find the shortest path between two router .so finally get an optimal cost for covering each router. 1st step->distance containing one edges. 2nd step-> distance containing atmost 2 edges 3rd step and so . 1 votes 1 votes Please log in or register to add a comment.