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CHAPTER 6
Networks
Size of Computer Networks
Home computer network
National computer network
Global computer network
Local Area Networks
Enterprise Network
Communications Media and Channels
Twisted-pair wire
Coaxial cable
Fiber optics
Sources: deepspacedave/Shutterst ock, GIPhotoStock/Photo Researchers, Inc, Philip Hatson/Photo Researchers
Network Protocols
Ethernet
Transmission Control Protocol/Internet Protocol (TCP/IP)
Packet Switching
Analog and Digital Signals
Types of Network Processing
Client/server computing
Peer-to-peer processing
© Matthias Pahl/Age Fotostock America, Inc.
© Toh Kheng Ho/Age Fotostock America, Inc.
An Intranet
© Corbis/Age Fotostock America, Inc.
Addresses on the Internet
IPv432 bits 128 bits
IPv6
The World Wide Web
The World Wide WebNot the same thing as the Internet
Home page
Uniform resource locator
© Ilin Sergey/Age Fotostock America, Inc.
Internet Address example
www.business.auburn.edu
Top level domain: edu
Name of the organization: Auburn University
Name of the specific computer: business
Publication of Material in Foreign Languages
Voice Communication
Two examples of Internet telephony (VoIP)
Skype
Vonage
Collaboration
Work group
Virtual group (team)
Source: Howard Kingsnorth/The ImageBank/Getty Images, Inc.
Crowdsourcing
© YURI ACURS/Age Fotostock America, Inc.
Telepresence Systems
See video on Cisco Magic
Source: PRNews Foto/Polycom, Inc./NewsCom
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