1. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Chapter 02: The Internet, the Web, and Electronic Commerce

2. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-2 The Internet and the Web The Internet is the largest global network, connecting smaller networks worldwideThe Internet is the largest global network, connecting smaller networks worldwide The Internet was launched in 1969The Internet was launched in 1969 –National computer network –US funded project called ARPANET The World Wide Web or WWW was introduced in 1991 at USAThe World Wide Web or WWW was introduced in 1991 at USA Father of WWW-Tim Burners LeeFather of WWW-Tim Burners Lee

3. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-3 Model of Internet

4. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-4 ISP Router A Router B DNS www.google.com fiber optic lines ISP: Internet Service Provider DNS: Domain Name Server Working of Internet

5. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-5 The Internet and How We Connect to It Using an ISP Explain what the Internet isExplain what the Internet is

6. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-6 The Internet and How We Connect to It Using an ISP Define an Internet Service Provider and its purposeDefine an Internet Service Provider and its purpose

7. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-7 The Internet and How We Connect to It Using an ISP Describe how you connect to the Internet through the ISP and the ISP’s relationship to the InternetDescribe how you connect to the Internet through the ISP and the ISP’s relationship to the Internet

8. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-8 The Internet and How We Connect to It Using an ISP Identify and describe the different connection options that ISPs can provideIdentify and describe the different connection options that ISPs can provide

9. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-9 The Internet and How We Connect to It Using an ISP Identify and describe the levels of service offered by an ISPIdentify and describe the levels of service offered by an ISP

10. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-10 How Information is Sent When Using an ISP Define and explain that the most important protocol of the Internet is the Internet Protocol (IP).Define and explain that the most important protocol of the Internet is the Internet Protocol (IP).

11. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-11 Common Internet Uses 1.Communication Exchange e-mail Discussion groups 2.Online Shopping 3.Searching Virtual libraries Virtual libraries 4.Entertainment 5.Education or e-learning

12. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-12 Access- ISP Common way to access the Internet is through a Commercial Internet Service Providers (ISP)Common way to access the Internet is through a Commercial Internet Service Providers (ISP) –National Service Providers –Wireless service providers

13. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-13 Browsers Programs that provide access to Web resourcesPrograms that provide access to Web resources Allow you to surf the InternetAllow you to surf the Internet Popular Web browsers include:Popular Web browsers include: –Mozilla Firefox –Apple Safari –Microsoft Internet Explorer –Google Chrome –Opera Address or location of the resource must be specifiedAddress or location of the resource must be specified –URL

14. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-14 URLs Uniform Resource LocatorsUniform Resource Locators –All URLs have at least two parts ProtocolProtocol Domain nameDomain name Top-level domains (TLDs) provide further information about the websiteTop-level domains (TLDs) provide further information about the website

15. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-15 This address is for an Internet server that uses The hypertext transfer protocol. This address is for an Internet server that uses The hypertext transfer protocol. This site belongs to a company named Glencoe. This site belongs to a company named Glencoe. This site is on the part of the Internet known as the World Wide Web. This site is on the part of the Internet known as the World Wide Web. To find the specific Web pages that accompany this book, your browser follows the URL’s path to a folder named “norton,” then to a subfolder named “online.” To find the specific Web pages that accompany this book, your browser follows the URL’s path to a folder named “norton,” then to a subfolder named “online.”

16. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-16 More on Browsers Browsers interpret HTML commandsBrowsers interpret HTML commands –Hypertext Markup Language –Contained in a document Display document as a Web pageDisplay document as a Web page

17. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-17 Communication Most popular Internet activityMost popular Internet activity Types of communicationTypes of communication –Electronic Mail (E-Mail) E-Mail –Instant Messaging Instant MessagingInstant Messaging –Social Networking Social NetworkingSocial Networking

18. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-18 E-Mail Transmission of electronic messages over the InternetTransmission of electronic messages over the Internet Basic partsBasic parts –Header AddressAddress SubjectSubject AttachmentAttachment –Message –Signature Line Return

19. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-19 E-Mail Address Example Return

20. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-20 Spam Junk and/or unwanted e-mailJunk and/or unwanted e-mail Computer viruses or destructive programs are often attached to unsolicited emailComputer viruses or destructive programs are often attached to unsolicited email –CAN-SPAM Act Spam blockers use a variety of approaches to identify and control spamSpam blockers use a variety of approaches to identify and control spam Spam blockers are also referred to as:Spam blockers are also referred to as: –Junk mail filters –Anti-spam programs Return

21. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-21 Instant Messaging Extension of email that provides direct, live communication between two or more peopleExtension of email that provides direct, live communication between two or more people Instant messaging programs also include:Instant messaging programs also include: –Video conferencing features –File sharing –Remote assistance Most widely used instant messaging services:Most widely used instant messaging services: –AOL’s Instant Messenger –Microsoft’s MSN Messenger –Yahoo Messenger Return

22. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-22 Social Networking One of the fastest growing uses of the InternetOne of the fastest growing uses of the Internet Three basic categories:Three basic categories: –Reuniting sites –Friend-of-a-friend sites –Common interest sites Return

23. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-23 Blogs, Microblogs, and Wikis Web logs or blogs – postings that are date- and time-stamped and then arranged with the most recent items shown firstWeb logs or blogs – postings that are date- and time-stamped and then arranged with the most recent items shown first Microblogs – short status updates or sentences that answer the question:Microblogs – short status updates or sentences that answer the question: –What are you doing now? Wiki – a specially designed Web site that allows visitors to edit the contents (e.g., fill in missing information)Wiki – a specially designed Web site that allows visitors to edit the contents (e.g., fill in missing information)

24. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-24 Search Tools Search enginesSearch enginesSearch enginesSearch engines Metasearch enginesMetasearch enginesMetasearch enginesMetasearch engines Specialized search enginesSpecialized search enginesSpecialized search enginesSpecialized search engines Content EvaluationContent EvaluationContent EvaluationContent Evaluation

25. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-25 Search Engines Specialized programs to assist in locating informationSpecialized programs to assist in locating information Types of searchesTypes of searches –Keyword search –Directory search Return

26. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-26 Metasearch Engines Return

27. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-27 Specialized Search Engines Return

28. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-28 Content Evaluation Not all information on the web is accurateNot all information on the web is accurate Ways to evaluate accuracy of Web information include:Ways to evaluate accuracy of Web information include: –Authority –Accuracy –Objectivity –Currency Return

29. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-29 Electronic Commerce Also known as e-commerceAlso known as e-commerce Buying and selling of goods over the InternetBuying and selling of goods over the Internet –Business-to-consumer (B2C) Business-to-consumer –Consumer-to-consumer (C2C) Web auctionsWeb auctionsWeb auctionsWeb auctions –Business-to-business (B2B) Business-to-business

30. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-30 Business to Business Involves the sale of a product or service from one business to another (B2B)Involves the sale of a product or service from one business to another (B2B) Primarily a manufacturer supplier relationshipPrimarily a manufacturer supplier relationship Return

31. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-31 Business to Consumer Fastest growing type of e-commerceFastest growing type of e-commerce Three most widely used B2C applications:Three most widely used B2C applications: –Online banking –Financial trading –Shopping Return

32. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-32 Consumer to Consumer Web Auctions Consumer-to-consumer e-commerce (C2C)Consumer-to-consumer e-commerce (C2C) Similar to traditional auctionsSimilar to traditional auctions TypesTypes –Auction house sites –Person-to-person auction sites Return

33. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-33 Security Payment methods must be fast, reliable, and securePayment methods must be fast, reliable, and secure Three basic optionsThree basic options –Checks –Credit card –Digital cash

34. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-34 Cloud Computing Shifts computing activities from users’ desktops to computers on the InternetShifts computing activities from users’ desktops to computers on the Internet Frees end-users from owning, maintaining, and storing software programs and dataFrees end-users from owning, maintaining, and storing software programs and data Three basic components:Three basic components: –Clients (end-users) –Service providers –The Internet

35. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-35 Web Utilities Specialized utility programs that make using the Internet & Web safer and easierSpecialized utility programs that make using the Internet & Web safer and easier –Plug-Ins Plug-Ins –Filters Filters –File Transfer Utilities File Transfer UtilitiesFile Transfer Utilities –Internet Security Suites Internet Security SuitesInternet Security Suites

36. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-36 Plug-Ins Programs that provide an enhanced browsing experience by enabling special file formats and multimedia elementsPrograms that provide an enhanced browsing experience by enabling special file formats and multimedia elements Return

37. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-37 Filters Programs that block access to selected sitesPrograms that block access to selected sites Return

38. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-38 File Transfer Utilities Programs that help you upload and download files to and from the InternetPrograms that help you upload and download files to and from the Internet Three popular types of programs:Three popular types of programs: –File transfer protocol (FTP & SFTP) –Web-based file transfer services –BitTorrent Return

39. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-39 Internet Security Suites Programs designed to maintain your security and privacy while on the webPrograms designed to maintain your security and privacy while on the web Return

40. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-40 Careers In IT - Webmasters Develop, maintain, and back-up websitesDevelop, maintain, and back-up websites Acquire, development, and maintain information resourcesAcquire, development, and maintain information resources Work with the marketing department to increase site traffic and monitor the flow of customer interactionsWork with the marketing department to increase site traffic and monitor the flow of customer interactions

41. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-41 A Look to the Future Web-Accessible Refrigerators “Smart” appliances in homes will have their own Web page“Smart” appliances in homes will have their own Web page Refrigerators know what food they containRefrigerators know what food they contain Appliance could send an e-mail list to the grocery store for restockingAppliance could send an e-mail list to the grocery store for restocking Downsides?Downsides?

42. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-42 Open-Ended Questions (Page 1 of 2) Discuss the Internet, including its origins and most common uses. What activities have you participated in? Which one do you think is the most popular?Discuss the Internet, including its origins and most common uses. What activities have you participated in? Which one do you think is the most popular? Discuss Internet communications, including e-mail, instant messaging, social networking, blogs, microblogs, and wikis.Discuss Internet communications, including e-mail, instant messaging, social networking, blogs, microblogs, and wikis. Describe the different types of search engines. Give an example of the type of search that each search engine is best for.Describe the different types of search engines. Give an example of the type of search that each search engine is best for.

43. © 2012 The McGraw-Hill Companies, Inc. All rights reserved. Computing Essentials 2012: Making IT Work for You 2-43 Open Ended Questions (Page 2 of 2) Describe electronic commerce, including business-to-consumer, consumer-to-consumer, and business-to-business e-commerce.Describe electronic commerce, including business-to-consumer, consumer-to-consumer, and business-to-business e-commerce. What is cloud computing? Describe the three basic components of cloud computing.What is cloud computing? Describe the three basic components of cloud computing.