1. Which of the Following terms best defines the sum of protection mechanisms inside the computer, including, hardware, firmware, and software?

A.Trusted system

B.Security kernel

C.Trusted computing base

D.Security perimeter

2.The Orange Book describes four hierarchical levels to categorize security systems. Which of the following levels require mandatory protection?

A. Divisions A and B

B. Divisions B and C

C. Divisions A, b, and C

D. Divisions B and D

3. Which Orange Book rating represents the highest security level?

A. B1

B. B2

C. F6

D. C2

4.The Orange Book is founded upon which security policy model?

A. Biba model

B. Bell-Lapadula model

C. Clark- wilson model

D. None of the above