1 votes 1 votes 2018 asked Jan 8, 2017 2018 367 views answer comment Share Follow See 1 comment See all 1 1 comment reply Mizuki commented Jan 9, 2019 reply Follow Share I think you have conflict with B. GBN ARQ GBN is generally used in hop to hop connections, so not at network layer. GBN does not accept out of order packets. So if N = 4 and packet 3 is lost in the window |3|4|5|6|, but all the other packets are properly transmitted then also the receiver is not going to accept any packets since the packet is is waiting for (ie 3) has not made it. It does nothing until its desired frame arrives. (Also in the option the word frame is used, which is by the way the name of packet at data link layer.) 0 votes 0 votes Please log in or register to add a comment.