Operating System (OS)
A spooler is a

Queue of print job that are waiting to print
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
Program that coordinates the print job that are waiting to process

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Operating System (OS)
Data encryption

is mostly used by public networks
is mostly used by financial networks
None of these
cannot be used by private installations
is not necessary, since data cannot be intercepted

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