Final answer:
An ESS (Enterprise Security System) must consist of at least two or more subsystems working together to provide a comprehensive security solution. A stand-alone access control system would not constitute an ESS.
Step-by-step explanation:
An ESS (Enterprise Security System) is a comprehensive security solution that integrates multiple subsystems to protect a facility or an organization. It typically includes elements such as access control, video surveillance, intrusion detection, and fire alarm systems. In order to be considered an ESS, it must consist of at least two or more subsystems working together.
Therefore, a stand-alone automated access control system would NOT constitute an ESS, as it is only one subsystem operating independently. It would not have the capability to integrate and interact with other security systems to provide a holistic security solution.
For example, consider a facility that has an access control system and a video surveillance system. If these two systems are not connected or integrated, they cannot be considered an ESS. But if they are connected and work together to provide a unified security solution, then they can be classified as an ESS.