View stunning SlideShares in full-screen with the new iOS app!Introducing SlideShare for AndroidExplore all your favorite topics in the SlideShare appGet the SlideShare app to Save for Later — even offline
View stunning SlideShares in full-screen with the new Android app!View stunning SlideShares in full-screen with the new iOS app!
What is Internet? Internet is a global network of smaller networks. Internet is the largest network. It is owned by NOBODY Smaller network: 1-1000 computers Satellites, Submarine Optical cables The biggest name is Cisco
DNS? DNS is like post office Some post offices will be knowing some addresses DNS servers will have addresses like this www.google.com => 18.104.22.168 Multiple Name servers for reliability
Domain Name MUFIXCommunity.com mail.MUFIXCommunity.net http://www.mufixcommunity.net http://www.mufix community.net:80 http://mail.mufic.com:8086/inbox/index.jsp Port
A simple web request Browser Name Server Internet Web Server IIS, Apache, Lighttpd etc. BIND, PowerDNS, djbdns HTTP Response http://bookmarks.rediff.com/recent/ DNS Lookup bookmarks.rediff.com => 22.214.171.124
Multi Tier App? Database Server Application Server App Server - Biz Logic - Processing - Modifying Data J2EE, ASP.NET, PHP, RoR, Python Apache/TomCat, IIS, lightTPD MS SQL, MySQL, Oracle Web Server Internet Web Server - Static File Serving - Caching - Proxying Database Server - Storage of Data - Retrieval - Some Biz logic