Answers

1. The purpose of a computer virus is to damage exposed systems, gain admin access, and steal delicate user data.
2. Biometrics is the term typically used for body measurements. Biometric authentication is used as a form of identification for many different devices.
3. 1. Scan specific files for any malware
   2. Allows you to schedule automatic scans to run on your computer
   3. Deletes any malicious code detected- some programs notify and ask you, others do it automatically.
   4. Allows you to scan a specific file or your entire computer at any time