What TCP/IP protocol is used for remote terminal connection service?

Answer: Option D

TELNET is the TCP/IP protocol used for remote terminal connection service.
It allows users to log in remotely to another computer over a network and access its resources as if they were directly connected to that computer.
TELNET operates on the application layer of the TCP/IP model and provides a virtual terminal connection, enabling users to execute commands on a remote system.
It's important to note that TELNET transmits data, including passwords, in plain text, which makes it less secure compared to other remote access protocols like SSH (Secure Shell).
So, in summary, for remote terminal connection service, the TCP/IP protocol used is TELNET.