The protection of DoD assets is achieved through the application of active and ___________ complementary physical security measures.

• A. Passive
• B. Active
• C. Administrative
• D. Electronic

Answer: (A)

Protection of DoD assets relies on a layered approach that combines actions that detect or respond with features that protect automatically. Active measures involve people or systems that require action, such as guards, alarms, and patrols. Passive measures are physical features that provide protection without ongoing action—fences, walls, barriers, secure doors and locks, lighting, and thoughtful building design. Together they deter, delay, and deny access even when no one is actively monitoring. Administrative measures are procedural, and electronic measures, while important, are part of detection or monitoring rather than the passive, non-action-based protection described here.