Which statement describes NOT a component of a layered access control system?

• A. Perimeter security
• B. Visitor management
• C. Random housekeeping checks
• D. Credentialed access

Answer: (C)

Layered access control relies on multiple protective layers that govern entry and movement within a facility. Perimeter security provides the first barrier to entry, deterring and delaying unauthorized access. Credentialed access uses badges, PINs, or biometrics to verify identity and grant entry only to those with proper authorization. Visitor management tracks who is on site, controls temporary access, and ensures guests are properly identified and escorted when needed. Random housekeeping checks, while useful for general security hygiene and compliance, do not operate as a formal layer that controls who can enter or move through secured areas. They’re not designed to grant or deny access, so they don’t fit as a component of layered access control.