Q. SMTP uses which of the following TCP port?

(A) 22
(B) 23
(C) 21
(D) 25

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✅ Correct Answer: (D) 25

Explanation: port 21 is used for ftp control connection, port 22 is used by ssh, and port 23 is used by telnet.

Published by Mr. Dubey ⭐ 104.82K Points at 14-Sep-2023 07:00 pm in Computer Architecture and Organization

Explanation by: Mr. Dubey

port 21 is used for ftp control connection, port 22 is used by ssh, and port 23 is used by telnet.

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