Chapter 2 The Internet and World Wide WebChapter 2 ObjectivesThe InternetHistory of the InternetSlide 5Slide 6How the Internet WorksSlide 8Slide 9Slide 10The World Wide WebSlide 12Slide 13Slide 14Slide 15Slide 16Slide 17Slide 18Slide 19Slide 20Slide 21Slide 22Slide 23Slide 24Slide 25Slide 26Slide 27Slide 28Slide 29Slide 30Slide 31Slide 32Slide 33Slide 34Slide 35Slide 36Slide 37Slide 38Slide 39Slide 40Slide 41Slide 42Slide 43Slide 44Slide 45Slide 46Slide 47E-CommerceOther Internet ServicesSlide 50Slide 51Slide 52Slide 53Slide 54Slide 55Slide 56Slide 57Slide 58NetiquetteSummary of the Internet and World Wide WebDiscovering Computers 2009Chapter 2The Internet and World Wide WebChapter 2 ObjectivesDiscuss the history of the InternetDiscuss the history of the InternetExplain how to access andconnect to the InternetExplain how to access andconnect to the InternetAnalyze an IP addressAnalyze an IP addressIdentify the components of a Web addressIdentify the components of a Web addressExplain the purpose of a Web browserExplain the purpose of a Web browserSearch for information on the WebSearch for information on the WebDescribe the types of Web sitesDescribe the types of Web sitesRecognize how Web pagesuse graphics, animation, audio,video, virtual reality, and plug-insRecognize how Web pagesuse graphics, animation, audio,video, virtual reality, and plug-insIdentify the steps required for Web publishingIdentify the steps required for Web publishingExplain how e-mail, mailing lists, instant messaging, chat rooms, VoIP, FTP, and newsgroups and message boards workExplain how e-mail, mailing lists, instant messaging, chat rooms, VoIP, FTP, and newsgroups and message boards workIdentify the rules of netiquetteIdentify the rules of netiquetteNextDescribe the types of e-commerceThe InternetWhat are some services found on the Internet?p. 68-69 Fig. 2-1NextHistory of the InternetHow did the Internet originate?Nextp. 69Goal:To function if part of network were disabledBecame functional September 1969ARPANETNetworking project by Pentagon’s Advanced Research Projects Agency (ARPA)Goal:To allow scientists at different locations to share informationHistory of the InternetHow has the Internet grown?p. 69TodayMore than 500 million host nodes1984More than 1,000 host nodes1969Four host nodesNextHistory of the InternetWho controls the Internet?p. 70World Wide Web Consortium (W3C)Oversees research, sets standards and guidelinesMission is to contribute to the growth of the WebNearly 400 organizations around the world are members of the W3CNextNo onec—cit is a public, cooperative, andindependent networkSeveral organizations set standardsClick to view Web Link,click Chapter 2, Click Web Linkfrom left navigation, then click W3Cbelow Chapter 2High-speed connectionHigh-speed connectionSlow-speed technologySlow-speed technologyHow the Internet WorksHow can you connect to the Internet?p. 70NextDial-up accessmodem in your computer uses a standard telephone line to connect to the InternetDial-up accessmodem in your computer uses a standard telephone line to connect to the InternetDSL, cable modem,FTTP, fixed wireless, wireless modem, Wi-Fi, and satellite modemsDSL, cable modem,FTTP, fixed wireless, wireless modem, Wi-Fi, and satellite modemsConnection is always on—whenever the computer is runningConnection is always on—whenever the computer is runningConnection must be established each time you log on.Connection must be established each time you log on.How the Internet WorksWhat are ways to access the Internet?p. 71 – 72 Fig. 2-2Next1. ISP, Regional or National2. OSP (AOL and MSN, for example)3. Wireless Internet Service ProviderClick to view Web Link,click Chapter 2, Click Web Linkfrom left navigation, then click Modemsbelow Chapter 2How the Internet WorksHow might data travel the Internet using acable modem connection?p. 73 Fig. 2-3NextHow the Internet WorksWhat is a domain name?p. 73 - 74 Figs. 2-4 – 2-5NextText version of Internet protocol (IP) addressNumber that uniquely identifies each computer or device connected to InternetThe World Wide Webp. 75NextWhat is the World Wide Web (WWW)?A worldwide collection of electronic documentsEach electronic document is called a Web pageAlso called the WebCan contain text, graphics, audio, video, and built-in connectionsA Web site is a collection of related Web pagesThe World Wide WebWhat is a Web browser?p. 75NextInternetExplorerNetscapeFirefoxProgram that allows you to view Web pages OperaSafariThe World Wide WebHow does a Web browser display a home page?p. 75 Fig. 2-6NextStep 3.The Web browser communicates with the access provider’s server to retrieve the IP address. The IP address is sent to your computer.Step 2.Web browser looks up the home page settingStep 1.Click the Web browser program nameStep 4.The home page displays in the Web browserThe World Wide WebWhat is a home page?p. 75 - 76 Fig.2-6NextThe first page that a Web site displays Often provides connections to other Web pagesThe World Wide WebHow do Internet-enabled mobile devices access the Web?p. 76 Fig. 2-7Use a microbrowser that displays Web pages that contain mostly textNextThe World Wide WebWhat is downloading?p. 76NextThe process of a computer receiving informationDepending upon connection speed, downloading can take from a few seconds to several minutesThe World Wide WebWhat is a URL?p. 76 - 77 Fig. 2-8NextUnique address for a Web pageA web server delivers the Web page to your computerThe World Wide WebWhat is a hyperlink (link)?p. 76 - 78NextItem found elsewhere on same Web pageDifferent Web page at same Web siteWeb page at a different Web siteBuilt-in connection to another related Web page locationThe World Wide WebHow can you recognize links?p. 77 Fig. 2-9NextA link can be text or an imagePointer changes to a small handwhen you point toa linkText links areusually underlinedand in a differentcolorThe World Wide WebWhat is a search engine?p. 78 – 80 Fig. 2-10NextProgram used to find Web sites and Web pages by entering words or phrases called search textAlso called a keywordThe World Wide WebWhat is a subject directory?p. 78 – 80NextSearch tool with organized set of categories and subcategoriesLets you find information by clicking links rather than entering keywordsThe World Wide WebWhat is a hit?p. 80 Fig. 2-11NextAny Web site name that is listed as the result of a searchAdvocacy Blog