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Chapter 1: Introduction

Chapter 1: Introduction. Business Data Communications, 4e. Information & Communication. Networking is critical to the new corporate structures emerging in today’s businesses Benefits of good networks make geographically dispersed companies more manageable

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Chapter 1: Introduction

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  1. Chapter 1: Introduction Business Data Communications, 4e

  2. Information & Communication • Networking is critical to the new corporate structures emerging in today’s businesses • Benefits of good networks • make geographically dispersed companies more manageable • help top-heavy companies trim down middle management • help companies break down barriers between divisions.

  3. Trends Driving Data Communication • Traffic growth • Voice & data; local and long distance • Development of new services • In turn drives increased traffic • Advances in technology • Encourage and support increased growth and development

  4. Key Technology Trends • Faster and cheaper computing and communications • Increasingly “intelligent” networks • Growing importance of Internet, intranet and extranet applications • Increasing use of and dependence on mobile technology

  5. Business Drivers

  6. Applications Services Management Infrastructure Convergence

  7. Business Information Requirements • Voice communications • Data communications • Image communications • Video communications

  8. The Internet & Distributed Applications • Key infrastructure for supporting distributed applications • Internet, including intranets and extranets • TCP/IP protocol suite • Distributed applications • Client-Server Architectures and Intranets

  9. Network Types • Wide Area Networks • Circuit Switched • Packet Switched • Frame Relay • ATM • Local Area Networks (LANs) • Wireless Networks • Metropolitan Area Networks

  10. Transmission of Information • Transmission and transmission media • e.g. twisted pair, fiber, wireless, coax • Communication Techniques • encoding, interface, protocols • Transmission efficiency • multiplexing, compression

  11. Management Issues • Network Security • Network Management

  12. Communications Standards • Importance • Process • Organizations

  13. Resources • Web Sites • Usenet Newsgroups • Journals • Business-oriented • Technical

  14. Telecommunication • Uses electricity to transmit messages • Speed of electricity dramatically extends reach • Sound waves: ~670 mph • Electricity: ~186,000 (speed of light) • Bandwidth= information-carrying capacity of a channel

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