Which one of the following is NOT a security mode of operation in an information system?

A.
Contained

B.
System high

C.
Multilevel

D.
Dedicated

Explanation:
The correct answer is Contained, a distracter. * In the system high mode the information system
operates at the highest level of information classification. In this mode, all users must have security
clearances for the highest level of classified information. * Answer the dedicated mode requires that
all users must have a clearance or an authorization and a need-to-know for all information that is
produced by the information system. * The multi-level mode of operation, answer c, supports users
with different clearances and data at multiple classification levels.