Questions

It is an authentication service developed at the Massachusetts Institute of Technology. Kerberos uses encryption to prevent intruders from discovering passwords and gaining unauthorized access to files.

Group of baboons together is called a congress.

Lithium is the lightest of all the metals due to its low atomic number among meetals

A paper printout of a document is known as Hardcopy output.

Indira Gandhi the first Prime Minister of India is known as the Iron Lady of India.

Micky mouse was the mouse that walks on 2 legs.

Telnet uses TCP at layer 4. It uses IP at layer 3. We know that Telnet uses TCP/IP protocol, but in the question, it is asked specifically at layer 4 what is used in Telnet. So it is TCP at layer4 and IP at layer 3.