CISSP-ISSMP · Question #89
Which of the following security models deal only with integrity? Each correct answer represents a complete solution. Choose two.
The correct answer is B. Clark-Wilson D. Biba. The Biba Integrity Model and the Clark-Wilson Integrity Model are both focused exclusively on data integrity. Biba enforces integrity through two rules: no read-down (subjects cannot read data at a lower integrity level) and no write-up (subjects cannot write to a higher integrit
Question
Which of the following security models deal only with integrity? Each correct answer represents a complete solution. Choose two.
Options
- ABiba-Wilson
- BClark-Wilson
- CBell-LaPadula
- DBiba
How the community answered
(20 responses)- A5% (1)
- B90% (18)
- C5% (1)
Explanation
The Biba Integrity Model and the Clark-Wilson Integrity Model are both focused exclusively on data integrity. Biba enforces integrity through two rules: no read-down (subjects cannot read data at a lower integrity level) and no write-up (subjects cannot write to a higher integrity level), preventing integrity from being contaminated. Clark-Wilson enforces integrity through well-formed transactions, separation of duties, and access controls between subjects and objects. Bell-LaPadula, by contrast, is a confidentiality model (no read-up, no write-down). 'Biba-Wilson' is a distractor and is not a recognized standard security model.
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