What is computer security?
The protection of computer's data, information, softwareand hardware from being damagedor lost is calledcomputer security.
Why is a system password used in a computer?
A password is a secret word that gives gives a user or blocks an unauthorized users to access to particular file, program or a system. A system password helps to protect the files and programs from being used by an unauthorized person. So, the unauthorized users cannot make any changes in content of a computer. It helps to stop the spreading of computer viruses, and makes different software secure. So, system password is used in a computer.