Thursday, October 21, 2010
Once the IP address is reached, the net site & all its content becomes obtainable to the user. very immediately the html or hypertext markup language code is sent back & the text & graphics are obtainable to the browser. This happens quickly, taking a few seconds, helping us make the most optimum use of the net.

it is fascinating to see how the net works. someone accessing the net will use a web browser like the net Explorer or Mozilla Firefox & the hypertext link to the page or resource is typed in. The address would read like this 'http://www.example.com/mypage.html'. This address is given by the global, distributed web database known as the Domain Name technique or DNS. To make this sound simpler, in the above example, the address of the server is 'http://www.example.com' & there, a request to view "mypage" is being made. HTTP or Hypertext Transfer Protocol helps in accessing the server. The DNS then turns all this in to an individualized IP or web Protocol address. This will look like a phone number with five numbers between 0 & 255. The IP is a procedure set up by the net to find a server anywhere in the world. In fact five times the IP address is known, the server can be located through the ISP or web Service Provider.

If things do not go as planned, the viewer will receive a mistake message stating 'the page cannot be displayed'. this might mean that there is a mistake in the server name or the page being looked for does not exist. often times the server could be busy or the page being searched has moved. it is best to follow the instructions given & continue.

All this sounds very simple, but today there is high degree of sophistication in the programming & solutions offered by a web page. The credit for designing the idea of the net goes to Tim Berners-Lee, when they built the "ENQUIRE". On August 6, 1991, they posted a short summary of the net project on the alt.hypertext newsgroup, using the idea of HTML. This was the debut of the net as a service on the net. they applied the idea of links to the net. This meant that the net became an accumulation of pages that could be accessed by clicking on links. Today they have benefited a lot from this new communication technique which makes the world a lot smaller than before & has linked its plenty of peoples as no other means could have ever done.

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