CompTIA A+ Core 1 (220-1001) — Question 339

A network administrator must install a device that will proactively stop outside attacks from reaching the LAN.
Which of the following devices would BEST meet the organization's needs?

Answer options

• A. IPS
• B. IDS
• C. Proxy server
• D. Authentication server

Correct answer: A

Explanation

The correct answer is A, IPS, because it actively prevents and mitigates attacks in real-time by blocking malicious traffic. In contrast, B, IDS, only detects and alerts on potential threats without taking action. C, a Proxy server, is primarily used for managing and filtering web traffic, and D, an Authentication server, is focused on verifying user identities rather than preventing external attacks.