What does the RBAC model use to determine a user's access permissions?

The RBAC (Role-Based Access Control) model determines a user's access permissions based on the user's role or responsibilities within an organization. This model is designed to streamline access management by grouping permissions according to the specific roles assigned to users rather than managing access on an individual user basis.

In an RBAC system, roles are defined according to the necessary access rights to perform specific job functions. For example, an employee in a managerial position might have different access permissions compared to someone in a clerical role. By aligning access privileges with roles, organizations can reduce the risk of unauthorized access and improve overall security.

Other choices, while they pertain to various aspects of security, do not directly influence access permissions in the context of the RBAC model. Security clearance deals with permissions based on background checks and trust levels, file sensitivity labels categorize documents, and employment history, while relevant for overall evaluation, does not inherently dictate access controls in the RBAC framework. Thus, the focus on roles and responsibilities is what distinctly defines the operational effectiveness of the RBAC model.