Which of the following security models does NOT concern itself with the flow of data?

The correct answer is D. The noninterference model. The noninterference model is concerned with whether actions performed at one security level can be observed or inferred by subjects at another security level - it focuses on isolation and interference between domains, not on the directional flow of data. In contrast, the…

Submitted by diego_uy· Apr 18, 2026Security Concepts and Practices

Question

Which of the following security models does NOT concern itself with the flow of data?

Options

AThe information flow model
BThe Biba model
CThe Bell-LaPadula model
DThe noninterference model

How the community answered

(37 responses)

A
5% (2)
C
3% (1)
D
92% (34)

Explanation

The noninterference model is concerned with whether actions performed at one security level can be observed or inferred by subjects at another security level - it focuses on isolation and interference between domains, not on the directional flow of data. In contrast, the Bell-LaPadula and Biba models explicitly govern information flow (read/write rules based on classification levels), and the information flow model directly tracks how data moves between security states. Noninterference asks: 'Can high-level actions affect what low-level users see?' rather than 'Where does data flow?'

Topics

#Security Models#Bell-LaPadula#Biba#Noninterference

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