Operating System (OS)
A public key encryption system

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

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Operating System (OS)
A real time operating system is most likely to be used for which of the following task?

Controlling the fuel injection system of an automobile engines
Ensuring that system clock works correctly on server
Managing the access to system files in a laptop computers
Controlling access to a shared printer in a network

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