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Mr. Dubey • 52.30K Points
Coach 

Q. What are the different modes of operation of a computer?

(A) user and system mode
(B) user and supervisor mode
(C) supervisor and trace mode
(D) supervisor, user and trace mode
Correct : Option (B)

Explanation: 
 the user programs are in the user mode and the system crucial programs are in the supervisor mode.

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