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Teh Intarw3bs Or becoming better informed users of the Internet
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Teh Intarw3bs Or becoming better informed users of the Internet.

Mar 26, 2015

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Elizabeth Flynn
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Page 1: Teh Intarw3bs Or becoming better informed users of the Internet.

Teh Intarw3bsOr becoming better informed users of the

Internet

Page 2: Teh Intarw3bs Or 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

Page 3: Teh Intarw3bs Or becoming better informed users of the Internet.

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

Page 4: Teh Intarw3bs Or becoming better informed users of the Internet.
Page 5: Teh Intarw3bs Or becoming better informed users of the Internet.
Page 6: Teh Intarw3bs Or becoming better informed users of the Internet.

Why the Internet?•Military: ARPANET 1969

•First version of “today’s Internet” in 1983

Page 7: Teh Intarw3bs Or becoming better informed users of the Internet.

The WWW

•One of many services on the Internet

•A series of documents connected through links

•Started ~1990

•Accessed through a web browser

Page 8: Teh Intarw3bs Or becoming better informed users of the Internet.

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>

Page 9: Teh Intarw3bs Or becoming better informed users of the Internet.

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)

Page 10: Teh Intarw3bs Or becoming better informed users of the Internet.

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, &amp; 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!

Page 11: Teh Intarw3bs Or becoming better informed users of the Internet.

Where’s Where’s MySpace?!MySpace?!

Page 12: Teh Intarw3bs Or becoming better informed users of the Internet.

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!

Page 13: Teh Intarw3bs Or becoming better informed users of the Internet.

Searching

Page 14: Teh Intarw3bs Or becoming better informed users of the Internet.

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 15: Teh Intarw3bs Or becoming better informed users of the Internet.

Page Ranking

•A page is important if a lot of important pages link to it

•Entire Internet gets to “vote”

Page 16: Teh Intarw3bs Or becoming better informed users of the Internet.

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.