Which of the following protocol pairs can be used to send and retrieve e-mails (in that order)?
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GATE CSE 2019 · Q16
MCQ1 markEasy
Time
Which of the following protocol pairs can be used to send and retrieve e-mails (in that order)?
Select one answerSingle correct
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Solution
Step-by-step verified solution
Official answer: B) SMTP, POP3
DNS and HTTPSMTP (Simple Mail Transfer Protocol) is an application layer protocol used to send/push e-mails from a client to a mail server and between mail servers.
POP3 (Post Office Protocol version 3) and IMAP (Internet Message Access Protocol) are message access protocols used by a client to retrieve/pull e-mails from a mail server.
MIME (Multipurpose Internet Mail Extensions) is an extension/format standard used to support non-ASCII text and multimedia attachments, not a transfer protocol for sending or retrieving.
Hence, the pair used to send and retrieve e-mails in that order is SMTP, POP3 (Option B).
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Examiner trap
The misconception this question tests
Identify which protocol is a 'push' protocol for sending mail and which is a 'pull' protocol for fetching mail.
This DNS and HTTP previous year question is Q16 of the GATE CSE 2019 paper. Find more GATE CSE PYQs on DNS and HTTP in Computer Networks, or browse all GATE CSE PYQs.
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DNS and HTTP in GATE CSE
DNS and HTTP has 18 GATE CSE PYQs across 15 papers from 2011 to 2026. 13 of them are 1-mark MCQs like this one, and it is the only one in GATE CSE 2019.
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Independent practice explanation verified by the GateAI team. GATE is conducted by the IITs; question text follows the official paper.