What is the primary purpose of perimeter security measures?

• A. To deter, detect, and delay intrusions, provide early warning, and protect critical assets and personnel.
• B. To decorate the fence.
• C. To collect taxes.
• D. To replace internal security.

Answer: (A)

Perimeter security serves as the first line of defense, creating a boundary that stops or slows unauthorized access while signaling when an intrusion occurs. Its main goal is to deter potential intruders, detect any attempts quickly, and delay them long enough for a response to be mounted. This combination provides early warning and protects critical assets and personnel by giving security forces time to react before a breach reaches vital areas. In a layered security approach, perimeter measures work alongside interior controls, not as a replacement for them. Decorations on the fence, tax collection, or replacing internal security don’t address the core purpose of preventing and delaying intrusion or providing timely warning, which is why they aren’t correct.