Operating System (OS)
A Processor

None of these
is the device where information is stored
is a sequence of instructions
is typically characterized by interactive processing and time of the CPU
is a device that performs a sequence of operations specified by instructions in memory.

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Operating System (OS)
A public key encryption system

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

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