Surface Web Jesse Russell

ISBN: 9785512349168

Published: April 13th 2012

Paperback

94 pages


Description

Surface Web  by  Jesse Russell

Surface Web by Jesse Russell
April 13th 2012 | Paperback | PDF, EPUB, FB2, DjVu, AUDIO, mp3, RTF | 94 pages | ISBN: 9785512349168 | 4.80 Mb

High Quality Content by WIKIPEDIA articles! The surface Web (also known as the visible Web or indexable Web) is that portion of the World Wide Web that is indexed by conventional search engines. The part of the Web that is not reachable this way isMoreHigh Quality Content by WIKIPEDIA articles! The surface Web (also known as the visible Web or indexable Web) is that portion of the World Wide Web that is indexed by conventional search engines. The part of the Web that is not reachable this way is called the Deep Web. Search engines construct a database of the Web by using programs called spiders or Web crawlers that begin with a list of known Web pages.

The spider gets a copy of each page and indexes it, storing useful information that will let the page be quickly retrieved again later. Any hyperlinks to new pages are added to the list of pages to be crawled. Eventually all reachable pages are indexed, unless the spider runs out of time or disk space. The collection of reachable pages defines the Surface Web.



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