Operating System (OS)
In analyzing the compilation of PL/I program, the description "creation of more optimal matrix" is associated with

Code generation
Assembly and output
None of these
Machine independent optimization
Syntax analysis

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Operating System (OS)
Round-robin scheduling

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

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Operating System (OS)
The dispatcher

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

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Operating System (OS)
The function(s) of file system is (are):

All of these
to provide complete file naming freedom to the users and to permit controlled sharing of files
to provide for long and short term storage of files with appropriate economic tradeoffs.
to provide security against loss of information due to system failure
None of these

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