Operating System (OS)
Data encryption

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

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Operating System (OS)
A spooler is a

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

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Operating System (OS)
Daisy chain is a device for

interconnecting a number of devices to a number of controllers
None of these
connecting a number of devices to a controller
All of these
connecting a number of controllers to a device

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