Windows Server 2003 DNS Service Intensive

This article is about configuring and managing DNS servers.

First understand the role of the DNS service, when to use? How do you use it?

In the current network, the computer through the IP address to communicate, IP address with digital, memory is too difficult, for the computer A good name, everything is easy.

The DNS service primarily serves two functions:

1 The corresponding domain name can be resolved to the corresponding IP address, which is called forward resolution.

2 The corresponding IP address can be resolved to the corresponding domain name, which is called reverse parsing.

Domain name space with layered structure

1, the root domain (root)

2, top-level domain

Organization Domain

Country or region

Reverse Domain

3, Level two domain

4, host name

Host name. DNS suffix =FQDN

such as [url]www.baidu.com [/url]

www is host name, and baidu.com is DNS suffix, FQDN named [url] www.baidu.com[/url]

The primary function of the DNS service is to resolve domain names to IP addresses

1, the client sends a domain name query request to the DNS server

2, the DNS server told the client Web server IP address

3, the client and the Web server communication

DNS service management is divided into DNS zones, referred to as areas for management

A contiguous part of a domain name space

The DNS server manages the domain namespace in a zone-by-unit

The data in the zone is saved in the zone file