Q. Which of the following protocol is used for e-mail services.
✅ Correct Answer: (B)
SMTP
Explanation: SMTP (Simple Mail Transfer Protocol) is the standard protocol used for sending emails across the Internet.
It works with other protocols like POP3 (Post Office Protocol 3) and IMAP (Internet Message Access Protocol) for receiving emails.
Other Options Explained:
(A) SMAP – Not a valid protocol.
(C) SMIP – Incorrect; no such protocol exists.
(D) SMOP – Not a valid protocol.
Thus, the correct answer is (B) SMTP.