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A. Monitor website traffic
B. Block unwanted email
C. Protect against unauthorized access and threats
D. Increase internet speed

Submitted by: Zafar Ullah

A firewall is a security system designed to prevent unauthorized access into or out of a computer network. Firewalls are often used to make sure internet users without access are not able to interface with private networks, or intranets, connected to the internet.

Correct Answer: Protect against unauthorized access and threats

Last Updated: May 22, 2024