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

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

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Operating System (OS)
Under virtual storage,

a single program is processed by two or more CPUs
only the active pages of a program are stored in primary storage
interprogram interference may occur
two or more programs are stored concurrently in primary storage
None of these

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Operating System (OS)
Memory management is :

None of these
not used on multiprogramming systems
replaced with virtual memory on current systems
critical for even the simplest operating systems
not used in modern operating system

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