Operating System (OS)
Under multiprogramming, turnaround time for short jobs is usually _____ and that for long jobs is slightly _____.

lengthened; lengthened
None of these
lengthened; shortened
shortened; lengthened
shortened; shortened

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Operating System (OS)
System generation:

is always quite simple
is always very difficult
requires extensive tools to be understandable
varies in difficulty between systems
None of these

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