A security function defines the expected behavior from a security mechanism, and assurance defines:

A security function defines the expected behavior from a security mechanism, and assurance defines:

A security function defines the expected behavior from a security mechanism, and assurance defines:

A.
The controls the security mechanism will enforce

B.
The data classification after the security mechanism has been implemented

C.
The confidence of the security the mechanism is providing

D.
Cost/benefit relationship

Explanation:
The functionality describes how a mechanism will work and behave;
this may have nothing to do with the actual protection it provides. Assurance is the
level of confidence in the protection level a mechanism will provide. When systems
and mechanisms are evaluated, their functionality and assurance should be examined
and tested individually.



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