CompTIA Network+ (N10-008) — Question 738

Which of the following is most closely associated with attempting to actively prevent network intrusion?

Answer options

• A. IDS
• B. Firewall
• C. IPS
• D. VPN

Correct answer: C

Explanation

The correct answer is C, IPS, because it is specifically designed to actively monitor network traffic and take action to prevent intrusions. In contrast, an IDS (A) only detects and alerts on intrusions, while a Firewall (B) filters traffic based on predetermined rules but does not actively prevent all types of intrusions. A VPN (D) provides secure remote access but does not focus on intrusion prevention.