A Universal Domain Name Resolution Technology
Many enterprises have set up many websites to meet the work needs of employees. To save money, these websites
Usually, virtual host technology is used, that is, multiple websites are set up on the same server, and employees use secondary domain names to access these websites. However, the maintenance of these secondary domain names requires a lot of work, but we can solve this problem by using the common domain name resolution technology. We only need to set up the DNS server that comes with the Windows system to support the common domain name. Next, take the DNS servers of Windows Server 2003 and Windows 2000 as examples to introduce how to convert them to achieve common domain name resolution. Let's assume that there is an rtj.net domain name on the server domain name system, so that the server domain name system supports the common domain name resolution of this domain name.
Two Real DNS Query Modes
There are two query principles, recursion and interaction. The former is queried by DNS proxy in an interactive manner, while the latter is queried directly by the local computer. From the above example, we can see that these two query modes exist interactively in the process of common name query.
1. Recursion
The DNS client queries DNSServer by sending the packet to be queried and waiting for the correct response with the correct name. This mode only deals with the error message whether the packet returned by the response is the correct response or the name cannot be found.
2. Dialogue (interaction)
The query mode between domain name servers is sent by the client or domain name server. In this way, Bao sent out a question. The data returned by the response may not be the last correct name and location, but it is not the error message mentioned above. He calls back to tell you the nearest IP location, then goes to the nearest IP to find the name to be resolved, and repeats the action until the correct location is found.
This article is written by Server hosting ——Provided by Micronet, and recommended to rent servers through Netcom
