Which of the following access control models uses a predefined set of access privileges for an object of a system?
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A. B. C. D.B.
The access control model that uses a predefined set of access privileges for an object of a system is the Mandatory Access Control (MAC) model.
In a MAC model, the system administrator defines the security policy for the entire system, and users are granted access based on the security clearance level they hold. This access level is determined by a hierarchical classification system that assigns users to different clearance levels. Access control decisions are based on this classification system rather than on individual user permissions or roles.
In contrast, Discretionary Access Control (DAC) allows owners or administrators of an object to control access to that object, including the ability to grant or deny permissions to individual users or groups of users. Policy Access Control is a general term that can refer to any access control model that is based on an explicit security policy.
Role-Based Access Control (RBAC) is an access control model that assigns roles to users, and users are granted access based on the permissions associated with those roles. This model simplifies access control administration, as the system administrator can assign or revoke permissions at the role level rather than having to manage individual user permissions.
Therefore, the correct answer to the given question is B. Mandatory Access Control.