Cn: Transport layer protocol

Question

Which of the following transport layer  protocols used to support email?

a:) SMTP

b:) TCP

c::)UDP

d) both b and c

Comments

b) TCP

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Tcp support the email procedure.

Protocols : POP3 and IMAP are two protocols to access mails also use TCP

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POP 3 and Imap also uses TCP as transport layer protocol ?

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Yup!

Answer 1

E-mail uses SMTP (simple mail transfer protocol) as Application layer protocol.

TCP and UDP both are Transport layer protocols.SMTP uses TCP because It's reliable ( Becuase we see reliability rather than speed or fastness)