Which combination describes the outer perimeter's defenses to prevent entry by the general public?

Which combination describes the outer perimeter's defenses to prevent entry by the general public?

• A. Perimeter fencing
• B. Signs
• C. Perimeter fencing, signs and access controlled gates
• D. Vehicle barriers

Answer: (C)

Protecting the outer boundary relies on layered defenses: a physical barrier to deter and slow entry, clear warnings to inform people of restrictions, and controlled access points to gate entry to authorized individuals only. Perimeter fencing provides the first line of defense by making unauthorized entry more difficult. Signs communicate that the area is restricted and what could happen if someone attempts to enter, reinforcing compliance. Access-controlled gates create a chokepoint where credentials or screening can be enforced, preventing bypassing the fence. Together, these three elements—fencing, signs, and gates—deliver both deterrence and actual control over who can enter, which is why this combination is the best answer.

Protecting the outer boundary relies on layered defenses: a physical barrier to deter and slow entry, clear warnings to inform people of restrictions, and controlled access points to gate entry to authorized individuals only. Perimeter fencing provides the first line of defense by making unauthorized entry more difficult. Signs communicate that the area is restricted and what could happen if someone attempts to enter, reinforcing compliance. Access-controlled gates create a chokepoint where credentials or screening can be enforced, preventing bypassing the fence. Together, these three elements—fencing, signs, and gates—deliver both deterrence and actual control over who can enter, which is why this combination is the best answer.