Which of the following is considered a physical control?

Fences are recognized as a physical control because they serve as a barrier to physically prevent unauthorized access to a facility or designated area. Physical controls are tangible security measures that are implemented to protect assets and ensure safety. Fences create a clear perimeter, deter intruders, and guide the flow of individuals around or into a location, directly enhancing the security of the environment.

While doors also provide physical security, they primarily regulate access rather than create a surrounding barrier. Ceilings and carpets do not serve as security measures in the same way that fences do; ceilings primarily provide structural integrity and aesthetic value, while carpets contribute to comfort and room design without affecting security directly. Therefore, fences stand out as a well-defined physical control aimed at restricting physical access.