Internet8bbsconcept

ISBN0-13-233553-0Prentice-Hall,2006Chapter22ElectronicBulletinBoardService(Newsgroups)Copyright2006Pearson/PrenticeHall.Allrightsreserved.DouglasE.Comer,TheInternetBookPage2©2006Pearson/PrenticeHall©2006Pearson/PrenticeHall©2006Pearson/PrenticeHallContents22.1BulletinBoardFunctionality22.2BulletinBoardTopics22.3NetworkNews22.4Categories22.5AccessingNewsgroups22.6ModeratedNewsgroups22.7HowMuchIsAvailable?22.8TheSignificanceofNewsgroups22.9NetEtiquetteDouglasE.Comer,TheInternetBookPage3©2006Pearson/PrenticeHall©2006Pearson/PrenticeHall©2006Pearson/PrenticeHallObjectives•DescribeanInternetservicethatextendstheuseofemailtoallowanindividualtojoinoneormorediscussiongroupsandparticipateindiscussionswithothermembersofthegroup•Summarizethebasicfunctionality•Showatypicaluse•Describehowtheunderlyingmechanismoperates•ProvidehintshowtousebulletinboardsandelectronicmailDouglasE.Comer,TheInternetBookPage4©2006Pearson/PrenticeHall©2006Pearson/PrenticeHall©2006Pearson/PrenticeHall22.1BulletinBoardFunctionality•Anelectronicbulletinboardserviceallowsapersontoparticipateinadiscussiongroupfocusedonaspecifictopic.•Thebulletinboardserviceallowsanindividualto:–Selectoneormorediscussiongroupsofinterest–Postanotetothediscussiongroupforotherstoread–Postanotethatrespondstoanothernote–FindnewnotesandselectivelyreadthemDouglasE.Comer,TheInternetBookPage5©2006Pearson/PrenticeHall©2006Pearson/PrenticeHall©2006Pearson/PrenticeHall22.1BulletinBoardFunctionality(continued)•Conceptually,theInternet’selectronicbulletinboardservicefillsthesameroleforInternetusersthatconventionalbulletinboardsfillineverydaylife.–Itallowsindividualstopostnoticesthatotherscanread.•TheInternetprovidesaccesstothousandsofelectronicbulletinboards,eachofwhichcontainsanongoingdiscussionaboutasingletopic.DouglasE.Comer,TheInternetBookPage6©2006Pearson/PrenticeHall©2006Pearson/PrenticeHall©2006Pearson/PrenticeHall22.1BulletinBoardFunctionality(continued)•Electronicbulletinboardservicecombinesfeaturesofmanycommunicationmechanisms:–Conventionalbulletinboard:Anyoneisallowedtopostamessageforotherstosee.–Newspaper:Eachmessageisdistributedtomanysubscribers.–Newsletterfromaclub:Themessagesfocusonasingletopicofinterest.–Electronicmailservice:Copiesofeachmessagepropagatequickly.–Informaldiscussionatasocialgathering:Anindividualcanlistentoaconversation,askquestions,occasionallyinterjectsmallcomments,orcontributelengthystatements.DouglasE.Comer,TheInternetBookPage7©2006Pearson/PrenticeHall©2006Pearson/PrenticeHall©2006Pearson/PrenticeHall22.2BulletinBoardTopics•Internetelectronicbulletinboardscoverawidelydiversegroupoftopics.Justafeware:–Generaldiscussion:news,politics,socialissues…–Consumerinterest:reviews,productdiscussions…–Personalinterest:cooking,physicalfitness,hobbies…–Localinterest:classes,schools,cities,companies,regions…–Entertainment:sports,movies,televisionshows,music…–Educational:computers,math,science,literature,medicine...–Filesharing:pictures,videos,music…–ProductsorservicesDouglasE.Comer,TheInternetBookPage8©2006Pearson/PrenticeHall©2006Pearson/PrenticeHall©2006Pearson/PrenticeHall22.2BulletinBoardTopics(continued)•Somediscussiongroupsrequirehighlyspecializedknowledgeoraremeaningfulonlytosomeonewhoworksataparticularcompanyorlivesinaparticularcountry.•Abulletinboardcanberestrictedtoafewcomputers,asingleorganization,orasmallgeographicarea.–OnebulletinboardthatcontainsadiscussionofpoliticsinAlberta,Canadaisdistributedonlytonearbysites.DouglasE.Comer,TheInternetBookPage9©2006Pearson/PrenticeHall©2006Pearson/PrenticeHall©2006Pearson/PrenticeHall22.2BulletinBoardTopics(continued)•Whenaboardiscreated,interestingsidediscussionsinevitablyarise.•Ifthereiscontinuedinterestinthesidetopic,thebulletinboardcanbesplit.•Bulletinboardsareeasytocreatewhichencouragesdiversity.DouglasE.Comer,TheInternetBookPage10©2006Pearson/PrenticeHall©2006Pearson/PrenticeHall©2006Pearson/PrenticeHall22.3NetworkNews•TheoriginalelectronicbulletinboardserviceavailableontheInternetiscalledNetworkNews,oftenabbreviatedNetNews.•NetNewsusesthetermnewsgrouptorefertoeachindividualbulletinboard(i.e.,eachdiscussiongroup),andarticletorefertoamessage.•Eacharticlesubmittedtoanewsgrouptakestheformofanelectronicmailmessage.–Likeemail,itcanbeasshortasasinglelineorcontainthousandsoflines.–AnarticlehasaheaderthatincludesaFromlinetoidentifythesender.DouglasE.Comer,TheInternetBookPage11©2006Pearson/PrenticeHall©2006Pearson/PrenticeHall©2006Pearson/PrenticeHall22.3NetworkNews(continued)•Eacharticlesubmittedtoanewsgrouptakestheformofanelectronicmailmessage.–Likeemail,itcanbeasshortasasinglelineorcontainthousandsoflines.–AnarticlehasaheaderthatincludesaFromlinetoidentifythesender.DouglasE.Comer,TheInternetBookPage12©2006Pearson/PrenticeHall©2006Pearson/PrenticeHall©2006Pearson/PrenticeHall22.3NetworkNews(continued)•NetNewsoriginatedaspartofanearlycomputernetwork(USENET)thatuseddial-upmodemstoexchangeinformation.•Asnetworkingtechnologychanged,USENETparticipantsinventedotherwaystocommunicatenetworknews.•MostUSENETsitesacquired