In computing terminology, what is a Firewall?
1
It is an antivirus protection software that should be installed on an Operating System to prevent malware getting installed.
2
It is the system of restricting user access to the computer, by using the Credential Manager of an Operating System.
3
It is a network security system to monitor and control incoming and outgoing network traffic based on security rules.
4
Both 1 and 3
5
Both 2 and 3