Disk Operating System (DOS) Question:
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.... is used in operating system to separate mechanism from policy.

a. Single level implementation
b. Two level implementation
c. Multi level implementation
d. None

Answer:

b. Two level implementation

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The OS used to operate the mobile phone is a:

a. Smart card OS
b. Embedded OS
c. Multi user OS
d. None of above		______ is used in operating system to separate mechanism from policy.

a. Single level implementation
b. Two level implementation
c. Multi level implementation
d. None