System Security Architecture

Question 1

Explain Trusted Computing Base

Answer 1

Collection of hardware, software, & firmware that provides security and enforces the system’s security policy.

Question 2

Explain Security Perimeter

Answer 2

Imaginary boundary between trusted TCB and untrusted.

Question 3

Explain Reference Monitor

Answer 3

Abstract machine that mediates all access subjects have to objects.
Access control concept, not physical.

Question 4

Explain Security Kernel

Answer 4

Hardware, Software, & Firmware components of the TCB

Enforces the reference monitor concept.