Operating System (OS)
An instruction in a programming language that is replaced by a sequence of instructions prior to assembly or compiling is known as

literal
None of these
procedure name
label
macro

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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

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

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Operating System (OS)
The FIFO algorithm

execute first the job that has been in the queue the longest
executes first the job that first entered the queue
executes first the job that last entered the queue
None of these
executes first the job with the least processor needs

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