CompTIA Network+ (N10-008) — Question 37

Which of the following BEST describes a network appliance that warns of unapproved devices that are accessing the network?

Answer options

• A. Firewall
• B. AP
• C. Proxy server
• D. IDS

Correct answer: D

Explanation

The correct answer is D, IDS (Intrusion Detection System), as it is specifically designed to monitor network traffic for suspicious activities and alert administrators about unauthorized access. The other options do not serve the same purpose; a Firewall controls traffic, an AP (Access Point) provides wireless access, and a Proxy server acts as an intermediary for requests.