Operating System (OS)
A public key encryption system

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

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Operating System (OS)
Operating system

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

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Operating System (OS)
Link encryption

is used only to debug
is less secure than end-to-end encryption
None of these
is more secure than end-to-end encryption
can not be used in a public network

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