Which of the following describes a logical form of separation used by secure computing systems?

A.
Processes use different levels of security for input and output devices.

B.
Processes are constrained so that each cannot access objects outside its permitted domain.

C.
Processes conceal data and computations to inhibit access by outside processes.

D.
Processes are granted access based on granularity of controlled objects.

Explanation:
TIPTON, Hal, (ISC)2, Introduction to the CISSP Exam presentation.