Operating System (OS)
Which of the following software types is used to simplify using systems software?

spreadsheet
None of these
timesharing
operating environment
multitasking

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Operating System (OS)
Most of the microcomputer's operating systems like Apple DOS, MS DOS and PC DOS etc. are called disk operating systems because

None of these
they are available on magnetic tapes
they are initially stored on disk
they are memory resident
they are partly in primary memory and partly on disk

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