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Chapter 2 The Internet and World Wide Web

Chapter 2 The Internet and World Wide Web. The Internet. Next. What are some services found on the Internet ?. p. 50 Fig. 2-1. The Internet. ARPANET Networking project by Pentagon’s Advanced Research Projects Agency (ARPA).

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Chapter 2 The Internet and World Wide Web

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  1. Chapter 2The Internet and World Wide Web

  2. The Internet Next • What are some services found on the Internet? p. 50 Fig. 2-1

  3. The Internet ARPANET Networking project by Pentagon’s Advanced Research Projects Agency (ARPA) Goal:To allow scientists at different locations to share information Goal:To function if part of network were disabled Became functional September 1969 Next • How did the Internet originate? p. 50

  4. The Internet Today More than 200 million computer linked hosts 1984 More than 1,000 hosts 1969 Four hosts Next • How has the Internet grown? p. 50

  5. The Internet World Wide Web Consortium (W3C) • Oversees research, sets standards and guidelines Next • Who controls the Internet? • No onec—cit is a public, cooperative, andindependent network • Several organizations set standards p. 51

  6. How the Internet Works Next • How might data travel the Internet using acable modem connection? p. 52 Fig. 2-2

  7. How the Internet Works Next • What is a domain name? • Text version ofInternet protocol (IP) address • Number that uniquely identifies each computer or device connected to Internet p. 53 Figs. 2-3 – 2-4

  8. The World Wide Web MicrosoftInternetExplorer Netscape Mozilla Opera Safari Next • What is a Web browser? • Program that allows you to view Web pages p. 54

  9. The World Wide Web Click to view Web Link,click Chapter 2, Click Web Linkfrom left navigation, then click Web Addresses below Chapter 2 Next • What is a URL? Unique address for a Web page • A web server delivers the Web page to your computer p. 56 Fig. 2-6

  10. The World Wide Web Next • What is a search engine? • Program used to find Web sites and Web pages by entering words or phrases called search text p. 57 Fig. 2-8

  11. Other Internet Services Step 1.Using e-mail software, you create and send message Step 2.Your software contacts software on your ISP’s outgoing mail server Step 4.When recipient uses e-mail software to check for e-mail messages, the message transfers from incoming mail server to recipient’s computer Step 3.Software on outgoing mail server determines best route for data and sends message, which travels along Internet routers to recipient’s incoming mail server Next • How does an e-mail message travel? p. 70 Fig. 2-20

  12. Other Internet Services Next • What is FTP? • File Transfer Protocol—Internet standard that permits you to upload and download files with other computers on the Internet p. 71

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