Operating System (OS)
Round-robin scheduling

allows processor-bound tasks more time in the processor
None of these
gives each task the same chance at the processor
allows interactive tasks quicker access to the processor
is quite complex to implement

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Operating System (OS)
The advantage of a command processor running only built-in commands is:

None of these
the command set being common across different hardware configurations
users can create system programs and run them as commands
flexibility to the users in running lists of commands by simply collecting them in named batch command files
the processing is much faster than would other-wise be the case when user defined commands are used

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