Which port does Telnet traditionally use?

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Multiple Choice

Which port does Telnet traditionally use?

Telnet is an old protocol for remote command-line access that uses TCP, and its default port is 23. Ports are the labeled endpoints that identify specific services on a device, so clients know where to connect for each service. The number 23 is the well-known port assigned to Telnet, which is why it’s the correct answer. The other numbers map to different services: 22 is SSH (the secure alternative to Telnet), 21 is the control connection for FTP, and 80 is the standard port for HTTP web traffic. Telnet’s lack of encryption is why SSH has become the preferred remote access method, typically on port 22.

Telnet is an old protocol for remote command-line access that uses TCP, and its default port is 23. Ports are the labeled endpoints that identify specific services on a device, so clients know where to connect for each service. The number 23 is the well-known port assigned to Telnet, which is why it’s the correct answer.

The other numbers map to different services: 22 is SSH (the secure alternative to Telnet), 21 is the control connection for FTP, and 80 is the standard port for HTTP web traffic. Telnet’s lack of encryption is why SSH has become the preferred remote access method, typically on port 22.

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