Server, with one Domain Name Server , then the server? What is this domain name

1. Definitions

The full name of the domain name system is the domain name server, which is a program to save the list of domain names and corresponding addresses, and is used to resolve the domain name of mail. Domain name is the name of a computer or computer group on the Internet, which is used to identify the computer's electronic location (sometimes geographical location) during data transmission. The domain name consists of a string of names separated by dots, usually including the name of the organization, and always contains a two or three letter suffix to indicate the type of organization or the country or region where the domain is located.

2. Overview

The software that translates domain names into IP addresses is called the Domain Name System, or DNS. This is a way to manage names. In this approach, different groups are responsible for the name of each subsystem. Each layer in the system is called a domain, and each domain is separated by a point. The so-called Domain Name Server is actually a host with a domain name system. It is a hierarchical database that can implement name resolution.

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