What are the three essential TCB elements required to ensure that an MLS system operates correctly?
What will be an ideal response?
TCB is the focus for security assurance, and three essential TCB elements are required to ensure that an MLS system operates correctly:
* Security policies
Explicit statements of what the system must do for security. These policies must be based on the MLS rules and how the system enforces MLS.
* Security mechanisms
The techniques of how TCB enforces the security policies.
* Assurances
Proof or evidence that the security mechanisms actually enforce the security policies.
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