Shulou(Shulou.com)06/02 Report--

What is domain name resolution? In view of this problem, this article introduces the corresponding analysis and answers in detail, hoping to help more partners who want to solve this problem to find a more simple and feasible way.

Domain name resolution is a service that points the domain name to the website space IP, so that people can easily access the website through the registered domain name.

Domain name is synonymous with IP, no user will remember your IP, for the security of the host, you do not want to reveal the IP to others wantonly. Users visit the website by visiting the domain name. Domain names do not exist in isolation. Domain names appear to replace ip addresses to make it easier for users to remember website addresses.

The normal use of domain names requires domain name resolution, otherwise direct access to the domain name will not be able to open the website. Domain name resolution includes: a record, CNAME record, NS record, MX record, URL display forwarding, URL implicit forwarding, dynamic domain name resolution.

Domain name resolution is actually a mapping relationship between a domain name and an ip address (server address). For example, if the domain name A-maps to-ip address A (website server A), then accessing domain name A can access the website content stored in server A.

For website applications, domain name resolution is divided into two ways, A record mode and CNAME record mode.

The A record method is very simple, which is the simplest ip mapping. When adding A record, the record value is the ip address of the server.

The CNAME record can be regarded as the upgraded version of the A record, although it is still ip mapping in the end, but the record value of CNAME is a domain name (we call it an alias) rather than an ip address. In this way, the domain name (alias) filled in in the record value is the same as a transit. When the target server ip changes, you only need to modify the resolution of the alias to point to the new ip. This is very convenient for multiple domain names to be resolved to the same server.

This is the end of the answer to the question about domain name resolution. I hope the above content can be of some help to you. If you still have a lot of doubts to be solved, you can follow the industry information channel for more related knowledge.

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