Which of the following security models dictates that subjects can only access objects through
applications?

A.
Biba-Clark model

B.
Bell-LaPadula

C.
Clark-Wilson

D.
Biba model

Explanation:
The Clark-Wilson security model dictates that subjects can only access objects through applications.
Answer option D is incorrect. The Biba model does not let subjects write to objects at a higher
integrity level.
Answer option B is incorrect. The Bell-LaPadula model has a simple security rule, which means a
subject cannot read data from a higher level.
Answer option A is incorrect. There is no such model as Biba-Clark model.
“http://en.wikipedia.org/wiki/Clark-Wilson_model”