INTERNET AND eBUSINESS (I)LEARNING GOALSTest your Internet knowledge (1)Brief history of the InternetTest your Internet knowledge (2)Accessing the InternetTest your Internet knowledge (3)File formats offered over the WWWAccessing the Internet (www)Internet applications/servicesE-MailFile TransferP2P service with facilitating serverInstant MessagingUsenet NewsgroupsStreaming Audio and VideoInternet TelephonyIntranets and ExtranetsPortalTest Your Internet knowledge (4)Test Your Internet knowledge (5)Test Your Internet knowledge (6)Summary Questions1INTERNET ANDeBUSINESS (I)BUS3500 - Abdou Illia, Fall 2012(October 29, 2012)2LEARNING GOALSIdentify and describe the major Internet applications.Define the World Wide Web and its operation.Distinguish between Internet, intranet, extranet, and explain how companies use them.3Test your Internet knowledge (1)During a previous class meeting, we saw that a network can be set up in order to share software resources (like data files, databases, and programs) and hardware resources (like printers). In other words, we can say that a network can be set up to provide file service, database service, and print service to users. Based on your Internet experience what kind of services users can get from the Internet?......4Brief history of the Internet1969 The Defense Advanced Research Projects developed ARPANET, the precursor of the Internet1971 Ray Tomlison invents e-mail1979 USENET newsgroups created at Duke University and the University of North Carolina1984 Domain Name System (DNS) established1991 Tim Berners-Lee creates the World Wide Web1994 First online shopping mall, first spam email, first pizza ordered online, first advertisement banner2000 A major denial of service attack brings down websites such as Yahoo!, Amazon.com, and eBay2002 Denial of service attack knocks out 8/15 root DNS servers5Test your Internet knowledge (2)Based on your Internet experience what are the different types Internet connections a residential user or a business can subscribe for?......6Accessing the Internet7Test your Internet knowledge (3)Based on your Internet experience which of the following content can you download from the Internet?a) Text filesb) Audio filesc) Video filesd) Graphic files8File formats offered over the WWW9Webserver needs:- Network (or Server) Operating System- TCP/IP- Domain name (e.g. eiu.edu)- Internet access - IP Address (e.g. 139.67.8.3)User PC needs:- Workstation Operating System- TCP/IP- Web browser (e.g. Internet Explorer)- Internet access (e.g. thru an ISP)- IP Address (e.g. 128.150.50.9)Accessing the Internet (www)NetworkWeb BrowserPacketRouterPacketRouteWebserverSoftware10Internet applications/servicesE-MailFile transfersInstant messaging (IM)NewsgroupsStreaming audio and videoInternet telephonyWorld Wide Web (WWW)11E-MailMost popular and widely used Internet applicationMore than 30 billion e-mails sent every daySpam – junk e-mail messagesSpam costs corporate America $9 billion per yearEvery e-mail message contains head that describes source and destination for the messageE-mail messages are text, but may have attachments of many types of digital dataViruses often transmitted via e-mail12File TransferFile transfer protocol (FTP)Protocol providing for transmission of a file between an Internet server and a user’s computerPeer-to-peer (P2P) file sharingShare data from one computer to anotherEvery user can be a server and a clientWith P2P, every user on the network can make data available to every other user on the networkExamples of P2P File transfer systems:NapsterKazaaGnutellaLimewire13P2P service with facilitating serverFiles to be shared are on client PCsClients upload the list of available file (NOT the actual files)Client PCNapsterIndexServer1.Uploads ListOf AvailableFilesWhen ConnectsClient PC Client PC2.Search Query3.Response4.Large P2PDownloadFile ListList ofAvailable FilesFrom AllCurrent Clients14Instant MessagingAllows user to create a private chat session with another userIM started with AOLMany Web-based companies use IM technology for customer serviceState of VirginiaeBay15Usenet NewsgroupsOnline, bulletin board discussion forumsUsers post and read messagesMore than 100,000 newsgroupsMillions of newsgroup readersImportant information resource, especially for technical issues and products16Streaming Audio and VideoCreating and sending audio and video filesSportsMen’s intercollegiate basketball at sports.yahoo.comMajor league baseballNewsFox NewsCNN radioBusinessZDNetEducationWarriors of the NetGeneralYoutube.comAlso known as Podcasting17Internet TelephonyUses Voice-over Internet Protocol (VoIP)Can use your computer to make phone callsSoftware connects computers via the Internet and transmits voice dataSavings comes from eliminating toll charges between locationsClient PCIn Zone 1Client PCin Zone 2GatekeeperFor Zone 21.H.323Connection1.H.323Connection1.H.323 Connection2.Subsequent H.323 P2P communication(or continue communicating through gateways)GatekeepersAuthenticate,LocatePSTNOrdinary TelephoneGatewayGatekeeperFor Zone 13. PSTN Connection18Intranets and ExtranetsIntranetInternal company network that uses Internet and WWW technologies.Typical Use:Finding and sharing work documentsCollaboration between employees to work in teamsCommunication toolTypically, only internal employees can get accessExtranetWeb site that allows customers and business partners limited access to organizational intranetUses Internet and WWW technologiesAdd additional security through the use of a Virtual Private Network (VPN)19PortalPortalWeb site that offers a broad array of resources and services; such asemailnewsgroupSerach enginesOnline shopping mallsExample: yahoo!, msn, aol20Test Your Internet knowledge (4)A company has set up an Intranet to allow virtual teams to work on projects, and to provide a mean for people to share documents that might be needed for work. Which of the following group of people is more likely to get access to these two services?a) The company’s customersb) The company’s suppliersc) The company’s employeesd) All of the above21Test Your Internet knowledge (5)A company has set up an Intranet to allow virtual teams to work on projects, and to
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