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Which combination of the following features will suffice to characterize an operating system as a multi-programmed operating system?
(A) More than one programs may be loaded into main memory at the same time for execution.
(B) If a program waits for certain events such as IN/ OUT, another program is immediately scheduled for execution.
(C) If the execution of a program terminates, another program is immediately scheduled for execution.
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- (A) only
- (A) and (B)
- (A) and (C)
- (A), (B) and (C)
- (A) only
Correct Option: B
Multi-programmed :- More than one program can run on single CPU, when one is blocked.
(A) Is true and a characteristic of multi-programmed
(B) Is true & also characterize a multi-programmed OS
(C) Is true but no necessary for this type this happens in all OS, even in batch processor.
Hence (b) is correct option.
