what tcp/ip protocol is used for remote terminal connection service
The TCP/IP protocol used for remote terminal connection service is TELNET.
Quick Scoop
If you see a multiple‑choice question asking:
“What TCP/IP protocol is used for remote terminal connection service?”
the correct answer is: TELNET.
What TELNET Actually Does
- Provides a remote login or remote terminal session to another machine over a TCP/IP network.
- Lets you interact with the remote system as if your keyboard and screen were directly attached to it.
- Works as an application‑layer protocol running over TCP, using a client–server model.
A simple way to picture it: you type a command on your local terminal, TELNET sends it over the network, and the remote host runs it and returns the text output back to your screen.
Why TELNET Is Not Commonly Used Now
- TELNET sends usernames and passwords in plain text , so anyone sniffing network traffic can read them.
- Because of this, modern systems typically use SSH (Secure Shell) instead, which encrypts the entire session.
So, historically and in exam questions, the correct TCP/IP protocol for remote terminal connection service is TELNET , even though in real‑world, up‑to‑date practice, SSH is the safer replacement.
Small Concept Table
| Protocol | Main Use | Security |
|---|---|---|
| TELNET | Remote terminal / remote login over TCP/IP. | [9][1]No encryption, credentials in plain text. | [1]
| SSH | Secure remote terminal / remote login. | [1]Encrypted, designed to replace TELNET for security. | [1]