Computer Science for IGCSE & O level - The Internet And Its Uses (Section 1 - No. 34)
What is the primary function of a 'firewall'?
To encrypt data transmitted over the internet.
To filter network traffic.
To translate domain names into IP addresses.
To store user browsing history.
คำอธิบาย
A firewall controls network traffic, allowing or blocking data based on pre-defined rules.