Telecommunications and networks, the Internet
Telecommunications and networks, the Internet
Telecommunications and networks, the Internet
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Physical transmission mediaBP’s Satellite Transmission System•Twisted wire (modems)• Coaxial cable• Fiber optics <strong>and</strong> optical <strong>networks</strong>–Dense wavelength division multiplexing (DWDM)•Wireless transmission media <strong>and</strong> devices–Microwave– Satellites– Cellular telephones• Transmission speed (hertz, b<strong>and</strong>width)FIGURE 7-7Communication satellites help BP transfer seismic data between oil explorationships <strong>and</strong> research centers in <strong>the</strong> United States.6-216-22OutlineThe Global <strong>Internet</strong>1. <strong>Telecommunications</strong> <strong>and</strong> Networking in Today’s BusinessWorld2. Communications Networks3. The Global <strong>Internet</strong>4. Wireless Networks•What is <strong>the</strong> <strong>Internet</strong>?• <strong>Internet</strong> Addressing <strong>and</strong> Architecture–The Domain Name System• Hierarchical structure•Top‐level domains– <strong>Internet</strong> Architecture <strong>and</strong> Governance•No formal management: IAB, ICANN, W3C–The Future <strong>Internet</strong>: IPv6 <strong>and</strong> <strong>Internet</strong>26-236-24
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