Which option correctly reflects a typical approach to intrusion detection infrastructure components?

• A. Computerized Monitoring Systems
• B. CCTV Cameras
• C. Perimeter Fences
• D. Doors and Locks

Answer: (A)

The main idea here is that an intrusion detection setup is best described as a centralized, automated system that collects signals from multiple sensors, correlates events, and provides real-time alerts and incident management. A computerized monitoring system fits this approach because it brings together data from cameras, access controls, motion detectors, door sensors, and other devices, runs rules to detect unusual activity, and notifies security personnel so they can respond quickly. This integrated solution is more effective for detecting intrusions than relying on a single component.

Standalone CCTV cameras are valuable for visibility and evidence after an event, but they don’t by themselves manage alerts or coordinate responses across the site. Perimeter fences mainly serve deterrence and physical barriers, while doors and locks control entry but don’t provide ongoing detection or centralized monitoring. The centralized computerized monitoring approach combines these elements into a cohesive detection system, which is why it’s the best answer.