Which of the following is commonly enforced by an Access Control System?

An Access Control System is fundamentally designed to manage permissions and regulate who can access specific resources within a system. By checking permissions on every access, the system ensures that only authorized users can retrieve or manipulate data. This process not only safeguards sensitive information but also helps maintain integrity and confidentiality within the operating system.

In a secure environment, it is critical to verify user permissions before allowing access to any resource, whether that be files, applications, or other critical system components. This continuous verification helps to mitigate potential unauthorized access, ensuring that users can only perform actions for which they have been explicitly granted rights. Checking permissions is, therefore, a core function of any robust Access Control System, laying the foundation for a secure operational environment within an organization.