Shulou(Shulou.com)05/31 Report--

In this issue, the editor will bring you about how to understand Dns and dns server. The article is rich in content and analyzes and narrates it from a professional point of view. I hope you can get something after reading this article.

DNS (Domain Name System, Domain name system), a distributed database on the Internet as a mapping between domain names and IP addresses, can make it more convenient for users to access the Internet without having to remember the IP strings that can be read directly by the machine. The process of getting the IP address corresponding to the host name through the host name is called domain name resolution (or host name resolution). DNS protocol runs on top of UDP protocol, using port number 53. In RFC documents, RFC 2181 has specification for DNS, RFC 2136 for dynamic updates of DNS, and RFC 2308 for reverse caching of DNS queries.

What is the DNS server?

To put it simply, the DNS server is the domain name management system.

DNS (Domain Name System) means domain name resolution server.

What is the DNS server for?

The function of DNS server on the Internet is to convert domain names into ip addresses that can be recognized by the network. First of all, it is important to know that Internet sites exist in the form of a server, but how do we get to the website server we want to visit? This requires assigning IP addresses to each server. There are so many websites on the Internet that it is impossible for us to remember the IP addresses of each website. This leads to a domain name management system DNS that is easy to remember. It can convert the memorable domain name we enter into the IP address of the server we want to visit.

That is, in order to facilitate us to browse the websites on the Internet without deliberately remembering the IP address of each host, the DNS server arises at the historic moment and provides the service of resolving the domain name into IP, so that when we surf the Internet, we can use a short and memorable domain name to access the host of the static IP on the Internet.

How do I use the domain name resolution service of the DNS server?

After you have your own domain name, you need a DNS server to resolve your domain name. The purpose of parsing is to tell your visitors which IP host your site is on.

The DNS server is provided by your domain name registration company. If you register a domain name with a company, it will be provided by that company. You don't need to make any settings, just keep the default options.

You can change the settings of your domain name at any time, such as letting it refer to a different IP. When you change the settings of the domain name, DNS servers around the world will be notified one by one. In this way, Internet users all over the world will be directed to your new host one by one. There is a process of notification, and it will take about 24 hours for DNS servers around the world to refresh and learn about your changes.

The above is the editor for you to share how to understand Dns and dns server, if you happen to have similar doubts, you might as well refer to the above analysis to understand. If you want to know more about it, you are welcome to follow the industry information channel.

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