Operating System (OS)
A public key encryption system

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

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Operating System (OS)
Scheduling is

the same regard-less of the purpose of the system
None of these
allowing jobs to use the processor
unrelated to performance consideration
not required in uniprocessor systems

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