1 1 vote The underlying Transport layer protocol used by SMTP is ________ (a) TCP (b) UDP (c) Either TCP or UDP Computer Networks computer-networks transport-layer tcp udp + – Jeetmoni saikia 1.0k views answer comment Share Follow Print See 1 comment 1 1 comment reply Shoto commented Nov 4, 2022 reply Follow flag TCP 0 0 replyShare Please log in or register to add a comment.
0 0 votes Its TCP. KrupaHCR answered Nov 4, 2022 KrupaHCR comment Share Follow See all 2 Comments 2 2 Comments reply Jeetmoni saikia commented Nov 4, 2022 reply Follow flag How 0 0 replyShare Vaishnavi Gadhe commented Nov 13, 2022 reply Follow flag @Jeetmoni saikia The big difference between TCP and UDP that makes TCP ideal here is that TCP checks to make sure that every packet is received and re-sends them if they are not whereas UDP will simply send packets and not check for receipt. This makes UDP ideal for things like streaming video where every single packet isn't as important as keeping a continuous flow of packets from the server to the client. Considering SMTP, it makes more sense to use TCP over UDP. SMTP is a mail transport protocol, and in mail every single packet is important. If you lose several packets in the middle of the message the recipient might not even receive the message and if they do they might be missing key 0 0 replyShare Please log in or register to add a comment.
