1 votes 1 votes As per the explanation here https://gateoverflow.in/1983/gate2014-2-25#7752 the answer should be 21. But 17 is provided as answer. Computer Networks gateforum-test-series computer-networks lan-technologies + – Gupta731 asked Nov 28, 2018 edited Mar 15, 2019 by ajaysoni1924 Gupta731 467 views answer comment Share Follow See all 7 Comments See all 7 7 Comments reply Show 4 previous comments kumar.dilip commented Nov 28, 2018 reply Follow Share 24 23 22 21 20 19 18 A -> B-> C -> R1-> R2-> J-> D. 1 votes 1 votes Shaik Masthan commented Nov 28, 2018 reply Follow Share yes, you are right @kumar.dilip due to A is the source, we can't decrement at A 0 votes 0 votes Gupta731 commented Nov 28, 2018 reply Follow Share Yes, 18 should be the answer. They have provided it wrong. 0 votes 0 votes Please log in or register to add a comment.