Operating System (OS)
A public key encryption system

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

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Operating System (OS)
Operating system

All of these
provides a layered, user-friendly interface
None of these
links a program with the subroutines it references
enables the programmer to draw a flowchart

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