Which access control model assigns permissions based on a user's job roles and responsibilities?

The access control model that assigns permissions based on a user's job roles and responsibilities is Role-Based Access Control (RBAC). In this model, access rights are granted to users according to the roles they hold within an organization, which reflects their job functions. This means that rather than managing individual permissions for each user, roles are created that contain necessary permissions, streamlining the process and making it easier to manage access control.

For example, a user in a human resources role may automatically have access to employee records, while a user in an IT role may have access to technical infrastructure and systems. This structured approach promotes efficient access management and helps maintain security by ensuring users only have access to information and systems relevant to their job functions.

The other access control models operate differently: Mandatory Access Control is based on predefined policies where the system dictates access rules (not user roles), Discretionary Access Control allows users to manage access to their resources at their discretion, and Attribute-Based Access Control makes decisions based on varying attributes of the user or resource, rather than specific job roles. Therefore, Role-Based Access Control is the most suitable model for this scenario.