Which item is NOT listed as a method of perimeter monitoring?

• A. Regular or irregular basis
• B. Video surveillance
• C. Armed observation towers
• D. Stationary posts

Answer: (D)

The idea being tested is how a perimeter is actively watched and detected across the area. Effective perimeter monitoring combines movement and technology to ensure coverage, detection, and quick response.

Regular or irregular patrols are a monitoring method because roving guards physically inspect different parts of the boundary, catching surprises that cameras alone might miss and providing a rapid response capability. Video surveillance adds continuous, real-time observation and recorded evidence, extending reach far beyond what a single guard can cover. Armed observation towers give a high, clear vantage point and serve both to deter intrusions and to spot activity from a distance, enabling quick action.

Stationary posts, while they can deter and provide localized observation, do not by themselves constitute a monitoring method that scans the entire perimeter. They represent fixed positions that cover a limited area and don’t offer the broad, active monitoring that patrols, cameras, and elevated towers provide.