Chapter 02
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The document provides an overview of chapter 2 from the textbook Discovering Computers 2012. It summarizes the evolution of the Internet from ARPANET in 1969 to today's worldwide network. It also describes the world wide web and how users access web pages through browsers. Finally, it outlines other Internet technologies like email, instant messaging, e-commerce, and netiquette guidelines.
Chapter 02
- 2. Objectives OverviewDiscovering Computers 2012: Chapter 22See Page 73 for Detailed Objectives
- 3. Objectives OverviewDiscovering Computers 2012: Chapter 23See Page 73 for Detailed Objectives
- 4. The InternetThe Internet is a worldwide collection of networks that links millions of businesses, government agencies, educational institutions, and individualsDiscovering Computers 2012: Chapter 24Page 74 Figure 2-1
- 5. Evolution of the InternetThe Internet originated as ARPANET in September 1969 and had two main goals:Discovering Computers 2012: Chapter 25Page 75
- 6. Evolution of the InternetDiscovering Computers 2012: Chapter 26Pages 75 - 76
- 7. Evolution of the InternetEach organization is responsible only for maintaining its own networkThe World Wide Web Consortium (W3C) oversees research and sets guidelines and standardsInternet2 connects more than 200 universities and 115 companies via a high-speed private networkDiscovering Computers 2012: Chapter 27Page 76
- 8. Evolution of the InternetMany home and small business users connect to the Internet via high-speed broadband Internet serviceDiscovering Computers 2012: Chapter 28Page 76
- 9. Evolution of the InternetAn access provideris a business that provides individuals and organizations access to the Internet free or for a feeDiscovering Computers 2012: Chapter 29Page 77 Figure 2-2
- 10. Evolution of the InternetDiscovering Computers 2012: Chapter 210Page 78
- 11. Evolution of the InternetDiscovering Computers 2012: Chapter 211Page 79 Figure 2-3
- 12. Evolution of the InternetAn IP addressis a number that uniquely identifies each computer or device connected to the InternetA domain nameis the text version of an IP addressTop-level domain (TLD)A DNS servertranslates the domain name into its associated IP addressDiscovering Computers 2012: Chapter 212Pages 79 – 80 Figure 2-4
- 13. Evolution of the InternetDiscovering Computers 2012: Chapter 213Page 80 Figure 2-5
- 14. The World Wide WebThe World Wide Web, or Web, consists of a worldwide collection of electronic documents (Web pages)A Web siteis a collection of related Web pages and associated itemsA Web serveris a computer that delivers requested Web pages to your computerWeb 2.0refers to Web sites that provide a means for users to interactDiscovering Computers 2012: Chapter 214Pages 80 - 81
- 15. The World Wide WebA Web browser, or browser, allows users to access Web pages and Web 2.0 programsDiscovering Computers 2012: Chapter 215Page 81
- 16. The World Wide WebDiscovering Computers 2012: Chapter 216Page 81 Figure 2-6
- 17. The World Wide WebA home page is the first page that a Web site displaysWeb pages provide links to other related Web pagesSurfing the WebDownloading is the process of receiving informationDiscovering Computers 2012: Chapter 217Some Web pages are designed specifically for microbrowsersPages 82 - 83 Figure 2-7
- 18. The World Wide WebA Web page has a unique address called a URL or Web addressDiscovering Computers 2012: Chapter 218Pages 82 – 83 Figure 2-8
- 19. The World Wide WebTabbed browsingallows you to open and view multiple Web pages in a single Web browser windowDiscovering Computers 2012: Chapter 219Page 84 Figure 2-9
- 20. The World Wide WebTwo types of search tools are search engines and subject directoriesDiscovering Computers 2012: Chapter 220Page 85
- 21. The World Wide WebDiscovering Computers 2012: Chapter 221Page 85 Figure 2-10
- 22. The World Wide WebA search engine is helpful in locating items such as:Discovering Computers 2012: Chapter 222Page 85
- 23. The World Wide WebDiscovering Computers 2012: Chapter 223Page 86 Figure 2-11
- 24. The World Wide WebSome Web browsers contain an Instant Search box to eliminate the steps of displaying the search engine’s Web page prior to entering the search textDiscovering Computers 2012: Chapter 224Page 87 Figure 2-12
- 25. The World Wide WebSearch operators can help to refine your searchDiscovering Computers 2012: Chapter 225Page 87 Figure 2-13
- 26. The World Wide WebThere are thirteen types of Web sitesDiscovering Computers 2012: Chapter 226Pages 88 – 91 Figure 2-15
- 27. The World Wide WebDiscovering Computers 2012: Chapter 227Pages 91 – 92 Figure 2-15
- 28. Video: Tell Your Stories via VlogCLICK TO STARTDiscovering Computers 2012: Chapter 228
- 29. The World Wide WebInformation presented on the Web must be evaluated for accuracyNo one oversees the content of Web pagesDiscovering Computers 2012: Chapter 229Page 92 Figure 2-16
- 30. The World Wide WebMultimedia refers to any application that combines text with:Discovering Computers 2012: Chapter 230Page 92
- 31. The World Wide WebA graphic is a digital representation of nontext informationGraphic formats include BMP, GIF, JPEG, PNG, and TIFFDiscovering Computers 2012: Chapter 231Page 93 Figure 2-17
- 32. The World Wide WebA thumbnail is a small version of a larger graphicDiscovering Computers 2012: Chapter 232Page 94 Figure 2-19
- 33. The World Wide WebAnimation is the appearance of motion created by displaying a series of still images in sequence33Page 94Discovering Computers 2012: Chapter 2
- 34. The World Wide WebAudio includes music, speech, or any other soundCompressed to reduce file sizeYou listen to audio on your computer using a playerStreaming is the process of transferring data in a continuous and even flowDiscovering Computers 2012: Chapter 234Pages 94 – 95 Figure 2-20
- 35. The World Wide WebDiscovering Computers 2012: Chapter 235Page 95 Figure 2-21
- 36. The World Wide WebVideo consists of images displayed in motionDiscovering Computers 2012: Chapter 236Page 96 Figure 2-22
- 37. The World Wide WebVirtual reality(VR) is the use of computers to simulate a real or imagined environment that appears as a three-dimensional spaceDiscovering Computers 2012: Chapter 237Pages 96 – 97 Figure 2-23
- 38. The World Wide WebA plug-in is a program that extends the capability of a Web browserDiscovering Computers 2012: Chapter 238Page 97 Figure 2-24
- 39. The World Wide WebWeb publishingis the development and maintenance of Web pagesDiscovering Computers 2012: Chapter 239Page 98
- 40. E-CommerceE-commerce is a business transaction that occurs over an electronic networkM-commerceidentifies e-commerce that takes place using mobile devicesDiscovering Computers 2012: Chapter 240Page 98
- 41. E-CommerceDiscovering Computers 2012: Chapter 241Pages 98 - 99
- 42. E-CommerceDiscovering Computers 2012: Chapter 242Page 99 Figure 2-25
- 43. Other Internet ServicesE-mailis the transmission of messages and files via a computer networkAn e-mail programallows you to create, send, receive, forward, store, print, and delete e-mail messagesDiscovering Computers 2012: Chapter 243Page 101 Figure 2-26
- 44. Other Internet ServicesDiscovering Computers 2012: Chapter 244Page 102 Figure 2-27
- 45. Other Internet ServicesA mailing listis a group of e-mail names and addresses given a single nameSubscribing adds your e-mail name and addressUnsubscribing removes your nameDiscovering Computers 2012: Chapter 245Page 103 Figure 2-28
- 46. Other Internet ServicesInstant messaging (IM) is a real-time Internet communications serviceDiscovering Computers 2012: Chapter 246Page 104 Figure 2-29
- 47. Other Internet ServicesA chat is a real-time typed conversation that takes place on a computerA chat roomis a location on an Internet server that permits users to chat with each otherDiscovering Computers 2012: Chapter 247Page 105 Figure 2-30
- 48. Other Internet ServicesVoIP (Voice over IP) enables users to speak to other users over the InternetAlso called Internet telephonyDiscovering Computers 2012: Chapter 248Page 106 Figure 2-31
- 49. Other Internet ServicesA newsgroup is an online area in which users have written discussions about a particular subjectTypically requires a newsreaderA message boardis a Web-based type of discussion groupDiscovering Computers 2012: Chapter 249Page 107 Figure 2-32
- 50. Other Internet ServicesFTP (File Transfer Protocol) is an Internet standard that permits file uploading and downloading with other computers on the InternetMany operating systems include FTP capabilitiesAn FTP server is a computer that allows users to upload and/or download files using FTPDiscovering Computers 2012: Chapter 250Page 107
- 51. NetiquetteNetiquette is the code of acceptable Internet behaviorDiscovering Computers 2012: Chapter 251Page 108 Figure 2-33
- 52. SummaryDiscovering Computers 2012: Chapter 252Page 109