CompTIA Network+ (N10-009) — Question 411

Which of the following is the best device to use to provide security and filtering between a private network and a public network?

Answer options

• A. Switch
• B. Firewall
• C. Bridge
• D. Gateway

Correct answer: B

Explanation

The correct answer is B, Firewall, as it is specifically designed to monitor and control incoming and outgoing network traffic based on predetermined security rules. Switches, bridges, and gateways do not provide the same level of security and filtering functionality as firewalls do.