1. Copyright (c) 2003 by Prentice Hall. All rights reserved. Understanding the Internet CHAPTER ONE How the Internet is Changing the World

2. Copyright (c) 2003 by Prentice Hall. All rights reserved. The Big Picture The Internet is a huge collection of computers all over the world that are connected in various ways.

3. Copyright (c) 2003 by Prentice Hall. All rights reserved. Common Uses of the Internet Electronic Mail Information Sharing and Resources Business Communications Advertising Online Shopping Stock Trading Discussions and Chat Entertainment Program Downloads

4. Copyright (c) 2003 by Prentice Hall. All rights reserved. The Internet is an Information Super Highway

5. Copyright (c) 2003 by Prentice Hall. All rights reserved. What is the Internet? The Internet is a huge network comprised of millions of computers worldwide. It is set up with clients and servers.

6. Copyright (c) 2003 by Prentice Hall. All rights reserved. Who Has Internet Access? Worldwide Internet Population Unique Users (2001 estimates): Projection for 2004: 498 million (Neilsen/Net Ratings) 709.1 million (Neilsen/Net Ratings) 533 million (Computer Industry Almanac) 945 million (Computer Industry Almanac)

7. Copyright (c) 2003 by Prentice Hall. All rights reserved. What is WWW? The World Wide Web is a graphical user-friendly interface What is a URL? Click here to find out!

8. Copyright (c) 2003 by Prentice Hall. All rights reserved. http://www.pearsoneducation.com Indicates the method the browser will use to retrieve the page Indicates the Web site location

9. Copyright (c) 2003 by Prentice Hall. All rights reserved. How Can I Find the Internet? A Web Browser  Microsoft Internet Explorer  Netscape Navigator

10. Copyright (c) 2003 by Prentice Hall. All rights reserved. Origins of the Internet ARPANET MILNET NSFnet MCI Mail and CompuServe 1969198319851989

11. Copyright (c) 2003 by Prentice Hall. All rights reserved. Protocols Network Control Protocol (NCP) Transmission Control Protocol (TCP) Internet Protocol (IP)

12. Copyright (c) 2003 by Prentice Hall. All rights reserved. Growth of the Internet

13. Copyright (c) 2003 by Prentice Hall. All rights reserved. Backbone Key Points Hubs Switches Router Packets ISP PoP

14. Copyright (c) 2003 by Prentice Hall. All rights reserved. How Information Travels Local ISP Regional Network Interstate

15. Copyright (c) 2003 by Prentice Hall. All rights reserved. The Impact of the Internet Electronic commerce and online shopping Stock trading and finances Communications Information sharing Telecommuting and home-based businesses Jobs Education Entertainment and travel

16. Copyright (c) 2003 by Prentice Hall. All rights reserved. Controversial Issues Privacy Free Speech Government Control and Surveillance

17. Copyright (c) 2003 by Prentice Hall. All rights reserved. Internet Technologies and Trends Greater concerns over securing data, maintaining privacy, and fighting cybercriminals More universal access to the Internet An increasing number of people using high speed (broadband) Internet access More fiber optic cable and other cutting-edge technologies

18. Copyright (c) 2003 by Prentice Hall. All rights reserved. Internet Technologies and Trends Increased use of wireless devices and personal digital assistants (PDAs) Greater government control over Internet content Increased electronic surveillance by government The use of biometrics

19. Copyright (c) 2003 by Prentice Hall. All rights reserved. Don’t Forget! The Internet has a colorful and interesting background.  began as a way for the Department of Defense to communicate remotely  mushroomed into a gigantic conglomeration of networks which span the world

20. Copyright (c) 2003 by Prentice Hall. All rights reserved. Don’t Forget! The supporting structure for the Internet is not controlled by any one organization.  Decentralization is intentional so communication can continue even if part of the Internet is destroyed by a natural or man- made disaster.

21. Copyright (c) 2003 by Prentice Hall. All rights reserved. Don’t Forget! The Internet is used for a wide variety of tasks  e-mail,  online shopping,  stock trading,  sharing information,  real-time communications, and  job-related tasks

22. Copyright (c) 2003 by Prentice Hall. All rights reserved. Don’t Forget! The Internet, by its very nature and strategic position, raises issues and concerns such as  privacy,  security,  freedom of speech, and  government control and monitoring As new technologies emerge and more people begin to use the Internet, issues will become more prominent.

23. Copyright (c) 2003 by Prentice Hall. All rights reserved. Questions?