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7e Chapter 13 - MSIS 2103 Chapter 13 1 Chapter 13 Behind...

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MSIS 2103 Chapter 13 1
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Chapter 13 Behind the Scenes: The Internet: How It Works 2
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Chapter Topics Managing the Internet Interaction between Internet components Internet data transmission and protocols IP addresses and domain names FTP and Telnet HTML and XML How e-mail and instant messaging work, 3
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Chapter Topics Managing the Internet Interaction between Internet components Internet data transmission and protocols IP addresses and domain names FTP and Telnet HTML and XML How e-mail and instant messaging work, 4
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Management of the Internet Who is Connected to the Internet? Private individuals in homes/offices Private individuals on the road Government LANs/individuals Corporate LANs Employees with remote access Satellite access, for example 5
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Management of the Internet Who, Then, Owns the Internet? No “headquarters” No “central administrator” No “central control” An ever-changing network with millions of nodes, thousands of LANs, and no “directory” Subnets are owned by government, 6
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Management of the Internet Who pays for the Internet? Individuals (U.S. Taxpayers, for example) Universities Government agencies Private companies Other countries 7
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Management of the Internet Who manages the Internet? Nonprofit organizations Standards groups User groups 8
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Management of the Internet These entities manage Domain name system/IP address allocation New technologies for the infrastructure Orderly growth and development of the Internet Development and standardization of the protocols that are used on the Internet 9
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Major Organizations in Internet Governance and Development 10
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Connecting to the Internet Internet backbone The collection of large national and international networks along which data travel the fastest Usually owned by commercial, educational or government entities T lines— used to be used for backbone ISP connections 11
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T-Lines Ran over twisted pair, and some on high- speed fiber-optic communications Designed to provide much higher throughput than either telephone or DSL Significantly slower than OC Line 12 Speed and Configuration of T-Lines
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Connecting to the Internet In the past Points of connection between ISPs Once known as network access points (NAPs) Designed to move large amounts of data among networks Now Private sector companies make up the Internet system Exchange data via Internet exchange points (IXPs) 13
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14 Example Quest’s Internet Backbone in 2010 IP means Internet Point Blue stars are the fastest fiber optics Access POP are a slower type of connection http://www.qwest.com/largebusiness/enterprisesolutions/net workMaps/preloader.html
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Example: Verizon This is an example of Verizon’s Global Internet backbone 15
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How Do the ISPs That Provide the Internet Backbone Communicate?
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