US CMA Part 1 · Chapter 5 · Question 20 of 23
What is the primary function of a firewall in a company's network security?
Test yourself: pick an answer
Reveal answer & explanation
Correct answer: D) To monitor and filter traffic between networks, blocking unauthorized access according to defined rules
Explanation
A firewall sits between a trusted internal network and untrusted external networks, such as the internet, and allows or blocks traffic based on security rules. Backup, storage encryption and input validation are separate controls.
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