0 votes 0 votes Q1. https://gateoverflow.in/3375/gate2008-it-64 Q2. https://gateoverflow.in/8481/gate2015-3-28 In Q1 the rtt is doubled while calculating but in Q2 rtt is not doubled. why ? . abhishek1995_cse asked Dec 2, 2018 abhishek1995_cse 505 views answer comment Share Follow See 1 comment See all 1 1 comment reply prashant jha 1 commented Dec 3, 2018 reply Follow Share Well in the first question , it is said that "A 11 Mbps satellite link connects two ground stations." , so the frame goes from STATION1------> SATELLITE -------> STATION2 and ack follows, STATION2------> SATELLITE--------> STATION1. So the total RTT in Q1 will be 4*Propagation_Delay. In Q2, there's no satellite in between stations. 0 votes 0 votes Please log in or register to add a comment.