Which TCP port number is used by Telnet?

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Multiple Choice

Which TCP port number is used by Telnet?

Telnet uses TCP port 23. The port number identifies the specific service on a host, and Telnet’s default listening port is 23, as defined in standard TCP/IP assignments. When a Telnet client connects, it reaches the server on this port to establish a remote login session (though Telnet sends data in plaintext, which is why SSH is preferred today). The other numbers correspond to different services: 22 is for SSH (secure remote login), 80 is for HTTP, and 443 is for HTTPS.

Telnet uses TCP port 23. The port number identifies the specific service on a host, and Telnet’s default listening port is 23, as defined in standard TCP/IP assignments. When a Telnet client connects, it reaches the server on this port to establish a remote login session (though Telnet sends data in plaintext, which is why SSH is preferred today). The other numbers correspond to different services: 22 is for SSH (secure remote login), 80 is for HTTP, and 443 is for HTTPS.

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