NP2010_Chapter06

NP2010_Chapter06 - Chapter 6 Chapter The Internet 6 Chapter...

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Chapter 6 Chapter 6 The Internet The Internet
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6 Chapter 6: The Internet 2 Chapter Contents h Section A: Internet Technology h Section B: Fixed Internet Access h Section C: Portable and Mobile Internet Access h Section D: Internet Services h Section E: Internet Security
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6 SECTIO N A Chapter 6: The Internet 3 Internet Technology Internet Technology h Background h Internet Infrastructure h Internet Protocols, Addresses, and Domains h Connection Speed
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6 Chapter 6: The Internet 4 Background h The ARPANET, created in 1969, connected computers at UCLA, Stanford Research Institute, University of Utah, and University of California at Santa Barbara h Today, the Internet connects computers all over the globe and supplies information to people of all ages and interests h With an estimated 500 million nodes and more than 1 billion users, the Internet is huge
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6 Chapter 6: The Internet 5 Internet Infrastructure h The Internet is not owned or operated by any single corporation or government h The Internet backbone is a network of high-capacity communications links that provides the main routes for data traffic across the Internet h Backbone links and routers are maintained by network service providers (NSPs) h NSP equipment and links are tied together by network access points (NAPs) h An Internet service provider (ISP) is a company that offers Internet access to individuals, businesses, and smaller ISPs
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6 Chapter 6: The Internet 6 Internet Infrastructure
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6 Chapter 6: The Internet 7 Internet Infrastructure h To communicate with an ISP, your computer uses some type of communications device, such as a modem
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6 Internet Protocols, Addresses, and Domains Chapter 6: The Internet 8
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6 Internet Protocols, Addresses, and Domains h A computer can have a permanently assigned static IP address or a temporarily assigned dynamic IP address Chapter 6: The Internet 9
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6 Internet Protocols, Addresses, and Domains Chapter 6: The Internet 10
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6 Chapter 6: The Internet 11 Internet Protocols, Addresses, and Domains The first step in registering a domain name is to find out whether the name is currently in use or reserved for future use. If a domain name is not available, consider using a different top-level domain, such as biz instead of com. After you’ve found an available domain name, you can continue the registration process by filling out a simple online form.
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6 Chapter 6: The Internet 12 Connection Speed h Data travels over the Internet at an incredible speed h The elapsed time for data to make a round trip from point A to point B and back to point A is referred to as latency Ping Traceroute h Upstream vs. downstream speed
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NP2010_Chapter06 - Chapter 6 Chapter The Internet 6 Chapter...

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