SSCP · Question #188
What is the name of the first mathematical model of a multi-level security policy used to define the concept of a secure state, the modes of access, and rules for granting access?
The correct answer is D. Bell-LaPadula Model. The Bell-LaPadula Model was the first mathematical model of a multi-level security policy, primarily concerned with preventing unauthorized access to classified information.
Question
What is the name of the first mathematical model of a multi-level security policy used to define the concept of a secure state, the modes of access, and rules for granting access?
Options
- AClark and Wilson Model
- BHarrison-Ruzzo-Ullman Model
- CRivest and Shamir Model
- DBell-LaPadula Model
How the community answered
(63 responses)- A5% (3)
- B6% (4)
- C2% (1)
- D87% (55)
Why each option
The Bell-LaPadula Model was the first mathematical model of a multi-level security policy, primarily concerned with preventing unauthorized access to classified information.
The Clark and Wilson Model focuses on data integrity, which came after Bell-LaPadula.
The Harrison-Ruzzo-Ullman (HRU) Model is a general access control model that came later than Bell-LaPadula.
Rivest and Shamir are associated with the RSA algorithm for public-key cryptography, not with the first multi-level security model.
The Bell-LaPadula Model, developed in the early 1970s, was indeed the first widely recognized mathematical model for multi-level security. It formally defined a "secure state," access modes (read/write), and rules (e.g., "no read up," "no write down") to enforce confidentiality in systems.
Concept tested: Historical security models (Bell-LaPadula)
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