CompTIA A+ Core 1 (220-1201) — Question 157

Which of the following best describes the purpose of a firewall?

Answer options

• A. To connect to Wi-Fi
• B. To assign IP addresses
• C. To route network packets locally
• D. To block unwanted traffic

Correct answer: D

Explanation

The correct answer, D, accurately describes a firewall's role in monitoring and controlling incoming and outgoing network traffic based on predetermined security rules. Options A, B, and C do not pertain to the functionality of a firewall, as they relate to connecting to networks, managing IP addresses, and routing packets, respectively.