What does the (star) integrity axiom mean in the Biba model?

What does the (star) integrity axiom mean in the Biba model?
A .  No read up
B .  No write down
C .  No read down
D .  No write up

View Answer

Answer: D

Explanation: The (star) integrity axiom of the Biba access control model states that an object at one level of integrity is not permitted to modify an object of a higher level of integrity (no write up). Source: KRUTZ, Ronald L. & VINES, Russel D., The CISSP Prep Guide: Mastering the Ten Domains of Computer Security, John Wiley & Sons, 2001, Chapter 5: Security Architectures and Models (page 205).