What can be described as an imaginary line that separates the trusted components of the TCB from those elements that are NOT trusted?

The correct answer is C. The security perimeter. The security perimeter is the imaginary line that separates the trusted components of the kernel and the Trusted Computing Base (TCB) from those elements that are not trusted. The reference monitor is an abstract machine that mediates all accesses to objects by subjects. The…

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

Question

Options

AThe security kernel
BThe reference monitor
CThe security perimeter
DThe reference perimeter

How the community answered

(43 responses)

A
7% (3)
B
2% (1)
C
88% (38)
D
2% (1)

Explanation

The security perimeter is the imaginary line that separates the trusted components of the kernel and the Trusted Computing Base (TCB) from those elements that are not trusted. The reference monitor is an abstract machine that mediates all accesses to objects by subjects. The security kernel can be software, firmware or hardware components in a trusted system and is the actual instantiation of the reference monitor. The reference perimeter is not defined and is a distracter.

Topics

#Security Perimeter#Trusted Computing Base (TCB)#Security Architecture#Security Concepts

Community Discussion

No community discussion yet for this question.

Full SSCP Practice