Operating System (OS)
File record length

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

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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 access to a shared printer in a network
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

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