I&I_4_2_11 - CHAPTER 4 THE INTERNET AND INTERNET...

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Unformatted text preview: CHAPTER 4 THE INTERNET AND INTERNET TECHNOLOGY Marina G. Erechtchoukova 2 What is the Internet? A collection of interconnected networks, all freely exchanging information The Largest computer network in the world (a network of networks) Exchanges information seamlessly by using the same open, non-proprietary standards and protocols, within interconnected networks Forms a massive electronic communications network Marina G. Erechtchoukova 3 The Evolution of the Internet 1969 ARPANET 1983 MILNET Early 1980s Computer Science Network (CSNET) and BITNET 1986 NSFNET Present Internet Marina G. Erechtchoukova 4 The Infrastructure of the Internet Commercial communications carriers provide the physical network backbone of the Internet Internet Service Providers: Backbone providers Access providers Reciprocal agreement Marina G. Erechtchoukova 5 How the Internet Works Data are split into small portions and wrapped into packets TCP is a transport layer protocol IP (Internet Protocol) – is a network layer protocol Marina G. ErechtchoukovaMarina G....
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This note was uploaded on 02/05/2012 for the course ECON 4140 taught by Professor A during the Spring '11 term at York University.

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I&I_4_2_11 - CHAPTER 4 THE INTERNET AND INTERNET...

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