Operating System (OS)
The dispatcher

None of these
never changes task priorities
actually schedules the tasks into the processor
is always small and simple
puts tasks in I/O wait

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Operating System (OS)
Backups should be done

as several image copies, followed by an incremental
None of these
daily for most installations
as several incrementals, followed by an image copy
weekly for most installations

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Operating System (OS)
The advantage(s) of incorporating the macro processor into pass 1 is(are):

None of these
Functions are combined and it is not necessary to create intermediate files as output from the macros processor and input to the assembler.
many functions do not have to be implemented twice.
more flexibility is available to the programmer in that he may use all the features of the assembler in conjunction with macros.
All of these

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