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Gate2002_2.21

Which combination of the following features will suffice to characterize an OS as a multi-programmed OS? (A) More than one program may be loaded into main memory at the same time for execution. (B) If a program waits for certain events such as I/O, another program is immediately scheduled for execution. (C) If the execution of a program terminates, another program is immediately scheduled for execution.

(a) A
(b) A and B
(c) A and C
(d) A, B and C

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