Operating System (OS)
The term "operating system" means

the way a floppy disk drive operates
a set of programs which controls computer working
conversion of high level language into machine code
the way a computer operator works
None of these

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Operating System (OS)
Link encryption

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

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

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

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