Certified Information Systems Security Professional (CISSP) — Question 231

To monitor the security of buried data lines inside the perimeter of a facility, which of the following is the MOST effective control?

Answer options

• A. Fencing around the facility with closed-circuit television (CCTV) cameras at all entry points
• B. Ground sensors installed and reporting to a security event management (SEM) system
• C. Regular sweeps of the perimeter, including manual inspection of the cable ingress points
• D. Steel casing around the facility ingress points

Correct answer: B

Explanation

Option B is the most effective because ground sensors can provide real-time monitoring and alerts for any unauthorized access or disturbances to the buried data lines. In contrast, options A, C, and D are more passive measures that do not offer the same level of immediate detection and response capabilities as ground sensors.