59 59 votes Which of the following functionality must be implemented by a transport protocol over and above the network protocol? Recovery from packet losses Detection of duplicate packets Packet delivery in the correct order End to end connectivity Computer Networks gatecse-2003 computer-networks network-layer easy + – Kathleen 23.0k views answer comment Share Follow Print See all 7 Comments 7 7 Comments reply Show 4 previous comments Punit Sharma commented Sep 8, 2019 reply Follow flag @Chhotu ji then we will go for other networks like ATM..? 0 0 replyShare arbpass commented Dec 26, 2025 reply Follow flag Recovery from packet losses - Not a must. UDP does not do loss recovery; TCP does. So transport layer may do it, but it is not mandatory.Detection of duplicate packets - Not mandatory. Again, TCP does it, UDP does not.Packet delivery in correct order - Not mandatory. TCP ensures ordering; UDP does not.End-to-end connectivity - Must be implemented by transport layer. Without it, applications cannot communicate using ports and sockets. 6 6 replyShare legend_of_cse commented Sep 9 reply Follow flag The network layer only provides host-to-host delivery but a transport protocol must extend host-to-host delivery to process-to-process (end-to-end) communication using port addresses.. 1 1 replyShare Please log in or register to add a comment.
0 0 votes COMMENT BELOW IF YOU HAVE ANY DOUBT akshay_123 answered Apr 13 akshay_123 comment Share Follow 0 reply Please log in or register to add a comment.
–3 –3 votes Answer: D saurabhrk answered Jan 9, 2015 saurabhrk comment Share Follow 0 reply Please log in or register to add a comment.
