Final answer:
A DACL (Discretionary Access Control List) specifies the permissions for users and groups regarding object access and operations within a system.
Step-by-step explanation:
The DACL (Discretionary Access Control List) determines which users and groups can access an object for which operations. A DACL is a component of an object's security descriptor that identifies the specific permissions granted or denied to user accounts and groups. When a user attempts to access an object, the system checks the DACL to determine if the user has the necessary rights to perform the requested operation.
A DACL or discretionary access control list lists users and groups allowed or denied access to an object. A user or a member of a particular group that DACL does not identify will be denied access. By default, a DACL is controlled by the user who created the object or the owner of the object that the DACL belongs to.
A discretionary access control list (DACL) identifies the trustees that are allowed or denied access to a securable object. When a process tries to access a securable object, the system checks the ACEs in the object's DACL to determine whether to grant access to it.