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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Operating System (OS)
Memory management is :

None of these
critical for even the simplest operating systems
not used in modern operating system
not used on multiprogramming systems
replaced with virtual memory on current systems

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Operating System (OS)
The FIFO algorithm

execute first the job that has been in the queue the longest
executes first the job that first entered the queue
None of these
executes first the job with the least processor needs
executes first the job that last entered the queue

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