Which of the following focuses on the basic features and architecture of a system?

A.
operational assurance

B.
life cycle assurance

C.
covert channel assurance

D.
level A1

Explanation:
“The operational assurance requirements specified in the Orange Book are as follows:
System Architecture
System integrity
Covert channel analysis
Trusted facility management
Trusted recovery”
Pg. 301 Krutz: The CISSP Prep Guide: Gold Edition