Data Communications and the Internet Chapter 5 Learning Objectives Know basic telecommunications terminology. Know the definition and characteristics of LAN, WANs, and internets. Understand the nature of processing in a layered communications protocol.
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Telecommunications is any "...process that permits the passage from a sender to one or more receivers of information of any nature delivered in any usable form (printed copy, fixed or moving pictures, visible or audible signals, etc.) by means of any electromagnetic system (electrical transmission by wire, radio, optical transmission, guided waves, etc.)." [Martin, James. Introduction to Teleprocessing. Englewood cliffs, NJ:Prentice-hall, 1972]
K=Kilo=1,000, M=Mega=1,000,000, G=Giga=1,000,000,000
Network Address Translation
Physical Addresses (MAC Addresses)
Logical Address (IP Addresses)
Public Versus Private Addresses