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Published byKory Hodges Modified over 9 years ago
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Networks and Telecommunications Strategies Dr. Robert Chi Chair and Professor, IS department Chief editor, Journal of Electronic Commerce Research
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Why communicate? Share –Hardware –Software –Data –Information To –Work collaborately –Work effectively
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How to communicate? Signals –Digital –Analog Channels –Wired Twisted Pair Wire (digital) Coaxial Cable (digital) Fiber optics (analog) –Wireless Radio, microwave and Infrared (analog)
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Types of networks By Scale –Local Area Networks –Wide Area networks By Structure –Shared networks (Bus, ethernet) –Switched networks (Star) –Enterprise networks (hybrid)
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Components of networks Modem Router Switch Gateway Bridge Hub
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Transmission Digital transmission –Digital or analog signals –repeaters Analog transmission –Analog signals only –Amplifiers
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TCP/IP TCP (transport control protocol) –How data are organized IP (Internet protocol) –Where data are going to
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Packet switch vs. circuit switch Packet Switch –Use packets –No busy lines –Many alternative routes Circuit Switch
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Cell phone technologies 1G –Analog transmission 2G –Digital Transmission –20 Kbps 3G –Digital Transmission –2 mbps
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The trend Integration –browser, cell, camera, TV, scanners.. Intelligent –Intelligent agent, Interactivity
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Exercise 1-2 students in a group Discuss and design a network for your company –What is the current network configuration in your company –What could be the future network configuration in your company in 10 years
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