Comprehensive and Detailed Explanation:
The key difference is that anIntrusion Prevention System (IPS)isinstalled in linewith network traffic, allowing it toactively block threats. In contrast, anIntrusion Detection System (IDS)onlymonitorsandalerts without actively blocking traffic.
Breakdown of Options:
* A. An IPS needs to be installed in line with traffic and an IDS does not.#Correct answer.IPS actively prevents threats, while IDSonly detectsthem.
* B. An IPS is signature-based and an IDS is not.-False, bothcanusesignature-based detection.
* C. An IPS is less susceptible to false positives than an IDS.-False, both can producefalse positives, depending on configurations.
* D. An IPS requires less administrative overhead than an IDS.-False, IPS requiresmore administrative effort due toreal-time blocking decisions.