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DNS Overview, Functions and Characteristics
Most of us know that it's a lot easier
to be a critic than a creator. It was easy to tell that the host table
name system used on the fledgling TCP/IP Internet was not going to serve
it going into the future, but finding a solution to this problem was
much more difficult. The main reason the host table system was insufficient
was that it was too simple, and this meant that its replacement, the
Domain Name System (DNS), had to be considerably more sophisticated.
Naturally, this made DNS more difficult to design, and also means we
have to devote more energy to understanding how it works.
As I like to do with the explanation
of most of the complex systems and protocols in this Guide, I begin
in this section with background information and an introduction to TCP/IP
DNS. I start by providing an overview of DNS's development, history
and standards, continuing the history begun in the overall look at TCP/IP
name systems. I discuss the design goals and objectives of the creators
of DNS, to help you understand better what its designers were trying
to do. I then talk about the main components of DNS and the functions
it performs, relating these to the basic functions explained in the
overview section on name systems.
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The TCP/IP Guide (http://www.TCPIPGuide.com)
Version 3.0 - Version Date: September 20, 2005
© Copyright 2001-2005 Charles M. Kozierok. All Rights Reserved.
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