Operating System (OS)
A spooler is a

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

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Operating System (OS)
All of the following are task performed by the operating system except

Managing hardware on the computer
Performing housekeeping task like file compression and disk defragmentation
Controlling the access that application program has to the CPU
Provides an interface for user to interact with computer

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