Operating System (OS)
What is the name of the operating system that reads and reacts in terms of actual time.

Real time system
Quick response system
None of these
Time sharing system
Batch system

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Operating System (OS)
The term "operating system" means

conversion of high level language into machine code
the way a floppy disk drive operates
the way a computer operator works
None of these
a set of programs which controls computer working

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Operating System (OS)
Semaphores

are used to do I/O
are used for memory management
synchronize critical resources to prevent contention
synchronize critical resources to prevent deadlock
None of these

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