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Chapter 1 Data Communications and
Networking.
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Data Communications - ANSWERThe study of low-level mechanisms and
technologies used to send info across a physical medium
Packet Switching - ANSWERA mode of data transmission that allows data to
broken down and transferred and reassembled at destination.
Packet Switching Affects - ANSWER*It provided the basis for the modern
Internet
*allows multiple users to share a network
*divides data into small blocks, called packets
*It includes an identification of the intended recipient in each packet
*Devices throughout the network each have information about how to reach
each possible destination
A Public Network - ANSWERRun as a service that is available to subscribers
Public Network details - ANSWER*Any individual or corporation who pays the
subscription fee can use
*A company that offers service is known as a service provider
*Public refers to the general availability of service, not to the data being
transferred
