A REVIEW ON LEVELS OF SURFING WEB

Surfing is an activity that started with the appearance of the planet wide net. With machine-readable text links, users will go not solely from one a part of a document to a different, however additionally from one document to a different, as well as those settled in remote sites. Surfing could be a favorite recreation for various individuals round the world UN agency has access to the net. Many users are hooked thereon, spending countless hours doing casual searches or other online activities. Searching on web nowadays will be compared to dragging a net across the surface of the ocean. While a good deal could also be caught within the internet, there is still a wealth of information that is deep, and therefore, missed. The reason is simple: Most of the Web's info on dynamically generated sites, and standard search engines never find it. Traditional search engines produce their indices by spidering on locomotion surface sites. To be discovered, the page must be static and linked to other pages. Traditional search engines cannot "see" or retrieve content within the deep net - those pages don't exist till they're created dynamically because the results of a particular search. Because traditional search engine crawlers cannot probe beneath the surface, the deep web has heretofore been hidden. Deep web is the name given to the technology of surfacing the hidden price that can't be simply detected by different search engines. The deep net is that the content that can't be indexed and searched by search engines. For this reason the deep net is additionally known as invisible net.