Which term describes an action performed by a subject on an object?

Which term describes an action performed by a subject on an object?

• A. Reference Monitor
• B. Operation
• C. Subject
• D. Object

Answer: (B)

An operation is the action a subject takes on an object. In access control, the subject is the active entity (like a user or a running process) and the object is the resource being accessed. The operation specifies what kind of action is requested, such as read, write, execute, or delete. The system’s reference monitor then decides whether that operation on that object is allowed according to policy. For example, when a user opens a document to read it, the read operation is being performed on that document.

An operation is the action a subject takes on an object. In access control, the subject is the active entity (like a user or a running process) and the object is the resource being accessed. The operation specifies what kind of action is requested, such as read, write, execute, or delete. The system’s reference monitor then decides whether that operation on that object is allowed according to policy. For example, when a user opens a document to read it, the read operation is being performed on that document.