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)
A spooler is a

Location in memory that maintains the contents of documents until it prints
Queue of print job that are waiting to print
Program that coordinates the print job that are waiting to process
Message sent from the printer to the operating system when a print job is completed

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