teh intarw3bs or becoming better informed users of the internet
TRANSCRIPT
Teh Intarw3bsOr becoming better informed users of the
Internet
Networks•146 BC - Greeks use torch signals
•1830s - Electric telegraph
•1870s - Telephone
•1920s - AM radio
•1930s - Television
•1960s - FM radio
•1970s - Computer networks
The Internet?
•A network of networks
•Companies, schools have their own networks
•E-mail, the World Wide Web, FTP are ways of sending info over the Internet
Why the Internet?•Military: ARPANET 1969
•First version of “today’s Internet” in 1983
The WWW
•One of many services on the Internet
•A series of documents connected through links
•Started ~1990
•Accessed through a web browser
HTML?
•Hypertext Markup Language
•Defines the structure of a web page
<h1>This is a heading</h1><h2>A sub-heading</h2><p>This is a paragraph!</p>
How does the WWW work?
•I figure out the address of where the info I want is
•I make a request to the server
•The server sends back my info
•(A server is any computer that can send out data in response to a request)
Blue Scholars on MySpace
Let’s check out the Blue Scholars’ MySpace page
www.myspace.com
Give me the Blue Scholars’ page!
Ok here it goes:<!-- ProfileV1 NH--><html xmlns:myspace="http://x.myspacecdn.com/modules/sitesearch/static/rdf/profileschema.rdf#"><!-- UserViewProfile --><head><meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7" /><script type="text/javascript"> //<![CDATA[var MySpace = {};var MySpaceRes = {};MySpaceRes.Common = {"Yes":"Yes","No":"No","Ok":"Ok","Attention":"Attention"};MySpaceRes.Header = {"Cancel":"Cancel / Cancelación","Continue":"Continue / Continuar"};MySpace.ClientContext = {"UserId":-1,"DisplayFriendId":1450027,"IsLoggedIn":false,"FunctionalContext":"UserViewProfile","UserType":1}; MySpace.StaticContentBase='http://x.myspacecdn.com'; MySpace.ClientMaintenanceConfigs = {"asyncphotobrowsecaching":0,"msplinksconvertall":0,"photocommentsajax":0,"inf_ind_newvideocomment":0,"musicjv_amazoninplace":0,"enablevideocategorydropdown":0,"applications_userapppreferences":0,"inf_ind_unreadim":0,"webimtestclient":0,"applications_showafterloaduhp":0,"applications_showafterloadprofiles":0,"applications_enablev2settingspopup":0,"musicjv_allmyplaylists":0,"inf_ind_newclassified":0,"webimcoldfusion":0,"webimclientrichtexteditor":0,"mdpcontaineruseopencanvas":0,"inf_ind_newautotag":0,"applications_enableopenidpopuphandling":0,"applications_removeonappprofile":0,"friendselectorinstatusmooddialog":0,"musicjv_debug":0,"photoquickpostmessaging":0,"mdp_enable_homeappnavdragdrop":0,"musicjv_stoprefresh_medrec":0,"mystuffautos":0,"mystuffreportabusepost":0,"dwbeaconmusicsearch":0,"dashboard_songstats":0,"dashboard_corestats":0,"dashboard_trends":0,"dashboard_artistrank":0,"dashboard_agegender":0,"dashboard_visitorsfriends":0,"dashboard_map":0,"dashboard_blogstats":0,"mystuffuploadphotos":0,"dwbeaconclientv2":0,"dashboard_monetization":0,"dwbeaconphotoprint":0,"mdpactivitiesautopublish":0,"dwbeaconpymk":0};MySpace.ClientIntMaintenanceConfigs = {};//]]></script><title>Blue Scholars on MySpace Music - Free Streaming MP3s, Pictures & Music Downloads</title><meta name="keywords" content="friends networking sharing photos finding friends blogs journals blogging journaling bands music rate pics join groups forums classifieds online social networking" /><meta property="myspace:profileType" content="Music" about="Blue Scholars" typeof="myspace:MusicProfile" ><meta name="description" content="MySpace Music profile for Blue Scholars. Download Blue Scholars Hip Hop / House / Tropical music singles, watch music videos, listen to free streaming mp3s, & read Blue Scholars's blog." /><meta http-equiv="expires" content="0" /><meta http-equiv="Pragma" content="no-cache" /><script type="text/javascript" src="http://js.myspacecdn.com/modules/common/static/js/swfobject-15_pba8crsx.js"></script><script type="text/javascript">MySpace.Ads = {};MySpace.Ads.Account = {"Type":"7"};MySpace.Ads.BandType = {"Genre1":"21","Genre2":"22","Genre3":"92","LabelType":""};MySpace.Header = {}; MySpace.Header.IsTrueGlobalHeaderEnabled = false; MySpace.Header.Navigation = {};MySpace.Header.Navigation.OnAfterRender = function(){};</script><script type="text/javascript" src="http://js.myspacecdn.com/modules/common/static/js/myspace_gocrglkv.js"></script><script type="text/javascript" src="http://cms.myspacecdn.com/cms/js/ad_wrapper0143.js"></script><script type="text/javascript">MySpace.ProfileClientContext = {"ProfileType":7,"ProfileVersion":1,"PrivateToUser":false};</script><link rel="canonical" href="http://www.myspace.com/bluescholars" /><link rel="stylesheet" type="text/css" href="http://x.myspacecdn.com/modules/common/static/css/myspace_jVtNwmP4.css" /><link rel="stylesheet" type="text/css" href="http://x.myspacecdn.com/modules/common/static/css/global_hu7nbz0y.css" /><link rel="stylesheet" type="text/css" href="http://x.myspacecdn.com/modules/profiles/static/css/profilelegacy_odkpcpi9.css" /><link rel="openid2.provider" type="application/x-openid-kvf" href="http://api.myspace.com/openid" /><link rel="stylesheet" type="text/css" href="http://x.myspacecdn.com/modules/profiles/static/css/musicv2_wo4zzzd-.css" /><style type="text/css">
Cool, thanks!
Where’s Where’s MySpace?!MySpace?!
IP addresses
• Every computer on the Internet has a unique address (ex.: 74.125.67.100)
• Domain Name Servers (DNS) map names to addresses
You: 67.171.16.158
Where’s myspace.com?
216.178.38.116
myspace.com: 216.178.38.116
Where’s www.myspace.com
www.myspace.com: 63.135.89.46
63.135.89.46
DNS server: 208.67.222.222Give me the Blue Scholars page
Ok, here it goes!
Searching
A bunch of links and words
•“Crawlers” or “spiders” look at pages
•Extract all words and links
•Stores them in a table, much like the index of a book
•When you make a query, it’s looked up in the table
Page Ranking
•A page is important if a lot of important pages link to it
•Entire Internet gets to “vote”
Next few days•Creating web pages lab - hit and run
intro
•Networking lab - hit and run intro
•FINAL PROJECT
•~2.5 weeks to work on technology of your choice!
•Individual or in pairs
•~5 min presentation on last day.