What does physical access control regulate?

Physical access control regulates who can physically enter and interact with an organization's facilities and equipment. This includes server rooms, data centers, wiring closets, and individual networking devices like routers and switches. The primary goal is to prevent unauthorized individuals from tampering with, stealing, or damaging critical infrastructure. "Access to servers to prevent malicious activity" is too narrow; physical access control protects all networking equipment, not just servers, and malicious activity can also be non-physical. "Access to specific networks based on business function" describes logical access control, which uses authentication and authorization protocols. "Access to computer networks and file systems" also refers to logical access control, managing user permissions and network traffic, not physical entry.