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How does the distinction between kernel mode and user mode function as a rudimentary from of protection system?


 이거 보호 시스템에서 커널이랑 사용자 모드 구별을 어떻게 하는가 ?

아님 ???

그래서 자신있게 모드비트로 구분합니다 라고 하고 답 찾아보니

The distinction between kernel mode and user mode provides a rudimentary form of protection in the following manner. Certain instructions could be executed only when the CPU is in kernel mode. Similarly, hardware devices could be accessed only when the program is executing in kernel mode. Control over when interrupts could be enabled or disabled is also possible only when the CPU is in kernel mode. Consequently, the CPU has very limited capability when executing in user mode, thereby enforcing protection of critical resources.

이딴식으로 나오는데 이게 답이 됨 ???

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