Operating System (OS)
Fragmentation of the file system

None of these
can always be prevented
occurs only if the file system is used improperly
is a characteristic of all file systems
can be temporarily removed by compaction

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Operating System (OS)
A public key encryption system

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

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