C, microphone, mouse scanner all send inputs to the system :)
@ is commonly known as an "at" sign, otherwise the official name is Commercial at.
Answer:
RADIUS.
Explanation:
RADIUS:- It's full form is Remote Authentication Dial-In User Service.It is a software and a protocol for client/server that lets the servers having remote access to communicate with the central server so that it can validate dial-in users and it can authorize their accessibility to the system or service they requested .
It provides better security.It lets an organisation or a company to maintain profiles of the users in a central database so that it can be shared by the remote servers.
The command that can be used to view the file is su -c "cat /etc/inittab" -l. The command in computer is a code that is used to tell (someone) to do something in a forceful and often official way.
A command in computer refers to a single order from a user to the computer's operating system or to an application to show a service, such as "Show me all my files" or "Run this program for me.
Kind of command there are:
- Group management commands.
- Array management commands.
- Global commands.
The commands are a kind of sentence to tell someone to do something. The other kind of command are: questions, exclamations and statements.
Learn more about the command, here brainly.com/question/13994833
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