Telecommunications and networks, the Internet
Telecommunications and networks, the Internet
Telecommunications and networks, the Internet
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OutlineNetworking <strong>and</strong> communication Trends• Convergence:1. <strong>Telecommunications</strong> <strong>and</strong> Networking in Today’sBusiness World2. Communications Networks3. The Global <strong>Internet</strong>4. Wireless Networks– Telephone <strong>networks</strong> <strong>and</strong> computer <strong>networks</strong>converging into single digital network using <strong>Internet</strong>st<strong>and</strong>ards–E.g. cable companies providing voice service• Broadb<strong>and</strong>:–More than 60% U.S. <strong>Internet</strong> users have broadb<strong>and</strong>access• Broadb<strong>and</strong> wireless:6-5–Voice <strong>and</strong> data communication as well as <strong>Internet</strong>access are increasingly taking place over broadb<strong>and</strong>wireless platforms6-6What is a computer network?Components of a Simple Computer Network•Two or more connected computers•Major components in simple network– Client computer– Server computer– Network interfaces (NICs)– Connection medium– Network operating system– Hub or switch•Routers– Device used to route packets of data through different<strong>networks</strong>, ensuring that data sent gets to <strong>the</strong> correct address6-7FIGURE 7-1Illustrated here is a very simple computer network, consisting of computers, anetwork operating system residing on a dedicated server computer, cable(wiring) connecting <strong>the</strong> devices, network interface cards (NICs), switches, <strong>and</strong>a router.6-8
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