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(ISC)2

SSCP · Question #139

For maximum security design, what type of fence is most effective and cost-effective method (Foot are being used as measurement unit below)?

The correct answer is D. Double fencing. For maximum security perimeter protection, double fencing (two parallel fence lines with a monitored buffer zone between them) is considered the most effective and cost-effective solution. The buffer zone between fences makes intrusion much harder, allows for detection, and can a

Submitted by marco_it· Apr 18, 2026Security Concepts and Practices

Question

For maximum security design, what type of fence is most effective and cost-effective method (Foot are being used as measurement unit below)?

Options

  • A3' to 4' high
  • B6' to 7' high
  • C8' high and above with strands of barbed wire
  • DDouble fencing

How the community answered

(34 responses)
  • A
    3% (1)
  • B
    15% (5)
  • C
    6% (2)
  • D
    76% (26)

Explanation

For maximum security perimeter protection, double fencing (two parallel fence lines with a monitored buffer zone between them) is considered the most effective and cost-effective solution. The buffer zone between fences makes intrusion much harder, allows for detection, and can accommodate patrols or sensors. A 3'–4' fence deters only casual entry, a 6'–7' fence deters most intruders, and an 8'+ fence with barbed wire is effective but double fencing provides layered defense and detection capability that single fences cannot match.

Topics

#Physical Security#Perimeter Security#Fencing#Defense-in-Depth

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