Operating System (OS)
A spooler is a

Message sent from the printer to the operating system when a print job is completed
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

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Operating System (OS)
Under virtual storage,

a single program is processed by two or more CPUs
two or more programs are stored concurrently in primary storage
None of these
interprogram interference may occur
only the active pages of a program are stored in primary storage

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