Correct Answer: B
Explanation/Reference:
Explanation:
The Bell-LaPadula model deals only with confidentiality, while the Biba and Clark-Wilson models deal only with integrity.
The Clark-Wilson model addresses all three integrity goals: prevent unauthorized users from making modifications, prevent authorized users from making improper modifications, and maintain internal and external consistency.
Incorrect Answers:
A: The Clark-Wilson security model does not focus on confidentiality; it focuses on integrity.
C: The Clark-Wilson security model does not focus on accountability; it focuses on integrity.
D: The Clark-Wilson security model does not focus on availability; it focuses on integrity.
References:
Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, New York, 2013, pp. 414, 416