A software interface to the operating system that implements access control by limiting the system
commands that are available to a user is called a(n):

A.
Physically constrained user interface

B.
Restricted shell

C.
Interrupt

D.
View

Explanation:
Answer Interrupt refers to a software or hardware interrupt to a processor that causes the program
to jump to another program to handle the interrupt request. Before leaving the program that was
being executed at the time of the interrupt, the CPU must save the state of the computer so that the
original program can continue after the interrupt has been serviced. *A physically constrained user
interface is one in which a user’s operations are limited by the physical characteristics of the
interface device. An example would be a keypad with the choices limited to the operations
permitted by each key. *View refers to database views, which restrict access to information
contained in a database through content-dependent access control.