Operating System (OS)
What is the name given to the software which can be legally compiled and often used for free?

None of these
Firmware program
Shareware program
Mindware
Public domain program

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Operating System (OS)
A public key encryption system

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

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