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GATE | GATE CS 2012 | Question 65
  • Difficulty Level : Easy
  • Last Updated : 29 Nov, 2013

Which of the following transport layer protocols is used to support electronic mail?
(A) SMTP
(B) IP
(C) TCP
(D) UDP


Answer: (C)

Explanation: E-mail uses SMTP as application layer protocol.

TCP and UDP are two transport layer protocols. SMTP uses TCP as transport layer protocol as TCP is reliable.

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