CyberCertPrepSecurity FundamentalsSecurity ToolsEASYFree question
What is the primary function of a firewall?
- A.To filter network traffic based on predefined security rules
- B.To scan for viruses on a computer
- C.To encrypt data on a hard drive
- D.To manage user passwords
Why A is correct
A firewall monitors and controls incoming and outgoing network traffic based on predetermined security rules. It acts as a barrier between trusted and untrusted networks, allowing or blocking traffic based on criteria like IP addresses, ports, and protocols. Firewalls can be hardware devices, software applications, or cloud-based services.
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