Which item is a major security-related physical component in vulnerability assessments?

• A. Access control
• B. Power
• C. Police
• D. Firefighting

Answer: (A)

Controlling who can reach sensitive areas is a core part of physical security in vulnerability assessments. Access control is the tangible system that restricts entry to authorized personnel—things like locked doors, badge readers, biometric scanners, and monitored entry points. Testing access control helps determine if an intruder could bypass protections to reach critical areas such as treatment plants, chemical storage, or control rooms, which directly reduces the risk of tampering or sabotage.

Power, while essential for operations, is a utility rather than a physical security control. Police refer to security personnel or law enforcement, and firefighting relates to emergency response capabilities; neither is a physical mechanism that gates access to facilities. Therefore, the major security-related physical component evaluated in vulnerability assessments is access control.