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

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

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Operating System (OS)
File record length

should always be fixed
Should always be variable
should be chosen to match the data characteristics
None of these
depends upon the size of the file

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