packet switching

A technology whereby each packet of a data communication can take a separate route to its destination.


Communication that is delivered and guaranteed using acknowledgments at the Transport layer of the TCP/IP protocol.

page file

The area of a hard disk that is set aside for virtual memory.


The process of moving memory from a hard disk into RAM to be used by an application. Memory on the hard disk is referred to as virtual memory.

parallel communication

The exchange of information between computers and peripherals using multiple data bits and control bits simultaneously over parallel wires.

parent folder

The folder above another folder in a folder hierarchy. The parent folder is said to "contain" the ...

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