Which of the following is an entry in an object's discretionary access control list (DACL) that grants permissions to a user or group?
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A. B. C. D.A.
The correct answer is A. Access control entry (ACE).
Discretionary access control lists (DACLs) are a type of access control mechanism used by Microsoft Windows operating systems to determine which users or groups are granted permissions to access a specific object (e.g., file, folder, printer, etc.). An object's DACL contains a list of access control entries (ACEs) that determine which users or groups have specific permissions (e.g., read, write, execute, etc.) to access the object.
Each ACE within a DACL is associated with a specific user or group and specifies the access permissions that are granted or denied to that user or group. ACEs can be added, modified, or removed from an object's DACL to grant or restrict access to the object.
In summary, an ACE is an entry in an object's DACL that grants permissions to a user or group. A DACL is a list of ACEs that collectively determine the access permissions for the object. The other options listed in the question are either incorrect (DACE and SID) or refer to broader concepts (ACL) that encompass more than just ACEs in a DACL.