Telnet port?

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Multiple Choice

Telnet port?

Explanation:
Telnet is the remote login protocol that traditionally runs over TCP port 23. This port is the standard assignment for Telnet services, which is why the correct choice is 23. Keep in mind that Telnet transmits data in plaintext, including credentials, so it’s considered insecure today and is often replaced by SSH on port 22. The other ports correspond to different services: 110 is used for POP3 email retrieval, 137–139 are NetBIOS services used in Windows networking, and 115 is an older simple file transfer protocol.

Telnet is the remote login protocol that traditionally runs over TCP port 23. This port is the standard assignment for Telnet services, which is why the correct choice is 23. Keep in mind that Telnet transmits data in plaintext, including credentials, so it’s considered insecure today and is often replaced by SSH on port 22. The other ports correspond to different services: 110 is used for POP3 email retrieval, 137–139 are NetBIOS services used in Windows networking, and 115 is an older simple file transfer protocol.

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