1. Part 1: Impact of Networks The Basics of Networking, Part 1 chapter 3

2. Slide 3-2 NETWORKED COMPUTERS CHANGE OUR LIVES > Nowhere Is Remote > People Are More Interconnected > Social Interactions Are Changing > English Is Becoming a Universal Language > Freedom of Speech and of Assembly Have Expanded

3. Slide 3-3 Web 1.0 Analogy by Philip Greenspun, photo.net. The computer is the steam engine. The network is the railroad.

4. Slide 3-4 Web 2.0 Analogy: universal virtual computer Tim O'Reilly is the founder and CEO of O'Reilly Media, Inc. applications revolve around the network as the planets revolve around the Sun universal virtual computer, the web as operating system. Cloud Computing: Web 2.0 Office 2.0

5. Slide 3-5 The Internet The Internet: global network of computer networks that transmit data by packet switching using the Internet Protocol (IP)Protocol

6. Slide 3-6 Figure 3.1. A diagram of the Internet.

7. Slide 3-7 The Internet Birth of the Internet: 4 node ARPAnet 19694 node ARPAnet 1969 Internet Growth Rates “ the fastest growing technology ever developed” As of September 30, 2007, 1.244 billion people use the Internet according to Internet World Stats Internet World Stats  Internet Domain Survey Host Count

8. Slide 3-8 The Internet  A packet-switched (asynchronous) network using the TCP/IP protocol?  Or “a drunk librarian”?“a drunk librarian”? The ability of TCP/IP to work over pre- existing communication systems allowed for rapid growth Use of the term "Internet" to describe a single global TCP/IP network originated around the 1990s.

9. Slide 3-9 Summary, Part 1 Impact of Networks > People are more interconnected — networks support distributed workgroups — ideally: democratic; decentralized — support freedom of speech, assembly — the Internet should function as a Web, rather than a hierarchy  World Wide Web Next : How networks move bits