The ability to do something with a computer resource can be explicitly enabled or restricted
through:
A.
Physical and system-based controls.
B.
Theoretical and system-based controls.
C.
Mental and system-based controls.
D.
Physical and trap-based controls.
Explanation:
Access is the ability to do something with a computer resource (e.g., use, change, or
view). Access control is the means by which the ability is explicitly enabled or
restricted in some way (Usually through physical and system-based controls).
Computer-based access controls can prescribe not only who or what process may have
access to a specific system resource, but also the type of access that is permitted.
These controls may be implemented in the computer system or in external devices.