Operating System (OS)
Assembler language

None of these
is a mnemonic form of machine language
is usually the primary user interface
is quite different from the SCL interpreter
requires fixed-format commands

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Operating System (OS)
Swapping

does not work with overlaying
allows many programs to use memory simultaneously
None of these
works best with many small partitions
allows each program in turn to use the memory

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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 memory resident
they are available on magnetic tapes
they are initially stored on disk
they are partly in primary memory and partly on disk

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