What is one issue NOT addressed by the Bell-LaPadula model?

A.
Information flow control

B.
Security levels

C.
Covert channels

D.
Access modes

Explanation:
As with any model, the Bell-LaPadula model has some weaknesses. These are the
major ones. The model considers normal channels of the information exchange and does not
address covert channels. -Ronald Krutz The CISSP PREP Guide (gold edition) pg 275-276