Which of the following access control models are used in the commercial sector?
Each correct answer represents a complete solution. Choose two.

A.
Clark-Biba model

B.
Clark-Wilson model

C.
Bell-LaPadula model

D.
Biba model

Explanation:
The Biba and Clark-Wilson access control models are used in the commercial sector.
The Biba model is a formal state transition system of computer security policy that describes a set of
access control rules designed to ensure data integrity. Data and subjects are grouped into ordered
levels of integrity. The model is designed so that subjects may not corrupt data in a level ranked
higher than the subject, or be corrupted by data from a lower level than the subject.
The Clark-Wilson security model provides a foundation for specifying and analyzing an integrity
policy for a computing system.
Answer option C is incorrect. The Bell-LaPadula access control model is mainly used in military
systems.
Answer option A is incorrect. There is no such access control model as Clark-Biba.
“http.//en.wikipedia.org/wiki/Biba”