Operating System (OS)
A spooler is a

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
Queue of print job that are waiting to print

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Operating System (OS)
Trojan-Horse programs

usually are immediately discovered
are hidden programs that do not show up on the system
do not usually work
None of these
are legitimate programs that allow unauthorized access

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