oop106

10.1 explain the differences among the terms security class, security level, security clearance, and security classification.

Context: BLP model, access control concept

security class - assigned to each subject and object, in the simplest form:
security level - form a strict hierarchy and are referred to as security levels (top secret -> secret -> ...)
security clearance - a subject is said to have a security clearance of a given level
security classification - an object  is said to have a security classification of a given level

10.2 what are the three rules specified by the BLP model?