The Computer Security Policy Model the Orange Book is based on is which of the following?

A.
Bell-LaPadula

B.
Data Encryption Standard

C.
Kerberos

D.
Tempest

Explanation:
Following the publication of the Anderson report, considerable research was
initiated into formal models of security policy requirements and of the mechanisms that would
implement and enforce those policy models as a security kernel. Prominent among these efforts
was the ESD-sponsored development of the Bell and LaPadula model, an abstract formal
treatment of DoD security policy.[2] Using mathematics and set theory, the model precisely
defines the notion of secure state, fundamental modes of access, and the rules for granting
subjects specific modes of access to objects. Finally, a theorem is proven to demonstrate that the
rules are security-preserving operations, so that the application of any sequence of the rules to a
system that is in a secure state will result in the system entering a new state that is also secure.
This theorem is known as the Basic Security Theorem.