Which access control model allows an administrator to implement security policies across all users?

The correct choice emphasizes the capability of Role-Based Access Control (RBAC) to implement security policies efficiently across all users within an organization. RBAC is centered around the roles that users hold within the organization. Each role is associated with the permissions required to perform particular tasks, allowing administrators to define what actions a user can perform based solely on their assigned role rather than on individual user permissions.

This model facilitates a streamlined management process because when a user’s role changes, only their role needs to be updated to reflect the new permissions, rather than changing permissions for every single user individually. This scalability and ease of management make RBAC particularly effective for organizations where user access needs to be controlled dynamically and ensures that policies remain consistent across all users in similar roles.

By using RBAC, organizations can enforce security policies uniformly, reducing the risk of human error and ensuring that users have access only to the information necessary for their roles. This model supports various compliance requirements and enhances overall security posture by promoting the principle of least privilege.