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

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

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Operating System (OS)
A public key encryption system

allows anyone to decode the transmission
allows only the correct receiver to decode the data
None of these
allows only the correct sender to decode the data
does not encode the data before transmitting it

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