Designing for Cisco Internetwork Solutions (DESGN, legacy) — Question 32

Which Cisco security mechanism has the attributes listed below?
✑ It is a sensor appliance
✑ It searches for potential attacks by capturing and analyzing traffic
✑ It is a "purpose-built device"
✑ It is installed passively
✑ It introduces no delay or overhead

Answer options

Correct answer: D

Explanation

The correct answer is D. NIDS (Network Intrusion Detection System) acts as a passive sensor that monitors network traffic for suspicious activities without causing delays. The other options, such as HIPS and PIX, do not possess all the attributes described, particularly the passive operation and the lack of introduced overhead.