The ISP Industry, just corresponding the World Wide Web, didn't really begin until 1994, when Netscape Corporation introduced its Mosaic browser, which enabled computer users to link into "computer gateways" around the world, and from those gateways gain coming to thousands of data bases around the world.
The fledgling ISPs established a line of business system that is still in existence today, although greatly enhanced. simply speaking, that business consists of "buying" or "leasing" time and bandwidth from telephone systems cognize as "backbone" suppliers (AT&T, Sprint, MCI and a handful of others) (Lange,1995, 103).
Once an discernment on a block of time or a quantity of bandwidth has been contracted for, the ISP then resells that time or bandwidth to companies that own a domain name (URL) and wish to have a location for their store. The company places its domain on an ISP, and begins paying "rent." In this case, the ISP is similar, philosophically, to a landlord. Best estimates place the size of the ISP industry at right around $3 billion a course of study and growing ("Global profit 100, 1998, Online).
The number of Internet value providers (ISPs) in the United
Lange, L., (1995, June 19), Internet starting to grow up. Electronic Engineering Times, 103.
From a user's shew of view, the only interesting aspect about protocols is that an individual's computer or device must support the right ones if he wants to impart with
The role of the backbone is seen in the following diagram.
In legal injury of numbers, the 11 largest ISPs are: AT&T WorldNet Service; bell shape Atlantic Internet Solutions; Best Internet Communications Inc., concentrical Network Corp.; EarthLink Network Inc.; GTE; IBM Global operate; Metricom; Pacific tam-tam Internet Services; PSINet Inc.; and Southwestern Bell Internet Services Inc.
Another threat is technology itself, which could replace the need for an ISP.
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