What must be posted conspicuously regarding perimeter controls?

• A. Signs posted conspicuously informing everyone that they are subject to inspection upon entry and exit
• B. No signs are required
• C. Signs about emergency procedures
• D. Signs about noise levels

Answer: (A)

Perimeter controls rely on clear notice that the area is restricted and that security checks may be performed on entry and exit. Posting conspicuous signs that inform everyone they are subject to inspection at entry and exit establishes the authority of those controls, deters attempts to bypass security, and ensures people know that inspections can occur as they come and go. Signs about emergency procedures or noise levels address different topics and don’t communicate the access control and inspection authority tied to the perimeter. Not posting any signs would leave people unaware of the requirement, weakening the security posture.