Multiple choice

Firewall is used in PC for

  1. Security

  2. Authentication

  3. Data transmission

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Firewalls are security devices that monitor and control network traffic based on predetermined rules, acting as barriers between trusted internal networks and untrusted external networks. They protect against unauthorized access and threats. Authentication (option B) is handled by separate authentication servers, and data transmission (option C) is what firewalls protect, not their purpose.

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