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How the Web works


Posted Date: 06 Mar 2008    Resource Type: Articles/Knowledge Sharing    Category: How things work

Posted By: B Satish       Member Level: Bronze
Rating:     Points: 3



Viewing a Web page on the World Wide Web normally begins either by typing the URL of the page into a Web browser, or by following a hyperlink to that page or resource. The Web browser then initiates a series of communication messages, behind the scenes, in order to fetch and display it.

First, the server-name portion of the URL is resolved into an IP address using the global, distributed Internet database known as the domain name system, or DNS. This IP address is necessary to contact and send data packets to the Web server.

The browser then requests the resource by sending an HTTP request to the Web server at that particular address. In the case of a typical Web page, the HTML text of the page is requested first and parsed immediately by the Web browser, which will then make additional requests for images and any other files that form a part of the page. Statistics measuring a website's popularity are usually based on the number of 'page views' or associated server 'hits', or file requests, which take place.

Having received the required files from the Web server, the browser then renders the page onto the screen as specified by its HTML, CSS, and other Web languages. Any images and other resources are incorporated to produce the on-screen Web page that the user sees.

Most Web pages will themselves contain hyperlinks to other related pages and perhaps to downloads, source documents, definitions and other Web resources. Such a collection of useful, related resources, interconnected via hypertext links, is what was dubbed a "web" of information. Making it available on the Internet created what Tim Berners-Lee first called the WorldWideWeb (a term written in CamelCase, subsequently discarded) in 1990.[1]

For more details, visit http://en.wikipedia.org/wiki/World_Wide_Web




Responses

Author: lokeshwaran k    20 Mar 2008Member Level: Silver   Points : 2
before sending request to the server from browser, an intermediate process is there.The address which you typed in the browser will send to the DNS server to resolve your web address to IP address


Author: Vidya    23 May 2008Member Level: Diamond   Points : 2
gud


Author: Shanthi M    29 May 2008Member Level: Diamond   Points : 2
good article


Author: helpu    31 May 2008Member Level: Gold   Points : 0
Very Nice Article.This is very good.


Author: lenin    02 Jun 2008Member Level: Diamond   Points : 0
Very interesting to read


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