What is described as the best physical security option for critical systems?

• A. Cloud hosting
• B. VPN gateway
• C. Secure servers in a data center
• D. Public access

Answer: (C)

Physical security for critical systems is strongest when the hardware sits in a facility designed to prevent unauthorized access and protect equipment from environmental threats. A secure data center provides multiple protective layers: strict access controls (badges, biometrics, mantraps, guards), comprehensive monitoring (video surveillance, logging), and tamper-evident procedures. It also offers reliable power and cooling with redundant infrastructure, fire suppression, and disaster recovery measures, along with protected network redundancy. By centralizing hardware in such a controlled environment, you greatly reduce risks from theft, tampering, and environmental damage.

Cloud hosting relies on the provider’s facilities, which may be secure but you don’t control the physical protections directly. A VPN gateway is a network device focused on secure communication rather than physical protection of hardware. Public access is unsafe because it exposes equipment to direct tampering and other risks. Therefore, secure servers in a data center provide the strongest physical security for critical systems.