1. HOW ACCESS TO WWW Student Name : Hussein Alkhaldi

2. Processes experienced by the user when requesting a web site Requirements :- 1- Computer with Network Card. 2- Internet Cabel. 3- OS. 4- Browser.

3. How access to www  Protocol :- Language of communication  When you go to URL to write a web site address (URL shortcut for Uniform resource Locater)  We write HTTP protocol, shortcut for (Hypertext transfer protocol)  Note The protocol(HTTPS) contains a layer of protection and the connection is encrypted  Then we write the domain with Extension.  Example (Http://www. Google.com)  Domain is (Google),, Extension is (.com).

4. How access to www  When we press Enter after typing the domain..  The Browser sends the request to the DNS Servers.  DNS shortcut for (Domain Name Server)  The DNS contains DataBase Stores the domain names and IP numbers As the following form.

5. How access to www IP Number Domain 209.85.229.147Google.com 60.122.105.85Yahoo.com 64.125.110.86 microsoft.com

6. How access to www  DNS  DNS server contains one Extension  Example (com ; net ; org ; info ; ps etc)  When we write Enter the browser change domain name to IP address(*),, and send the Request to DNS SERVER And compares the IP address database in the DNS server  If the site Available return to browser and display it  If the site not found Request goes to another server (*)Because it is difficult for people to remember IP addresses for each site