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
Managing the access to system files in a laptop computers
Ensuring that system clock works correctly on server
Controlling access to a shared printer in a network

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Operating System (OS)
System maintenance:

is usually not necessary
always requires several programs
is necessary on all systems, regardless of how good
is not required if the system is well written
None of these

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