With the BLP model, security policies prevent information flowing downwards from a:
A.
Low security level
B.
High security level
C.
Medium security level
D.
Neutral security level
Explanation:
Bell-LaPadula is a state machine model capturing confidentiality aspects of access control. Access
permissions are defined through an Access Control matrix and through a partial ordering of security
levels. Security policies prevent information flowing downwards from a high security level to a low
security level. BLP only considers the information flow that occurs when a subject observes or alters
an object.