What is a dns server?

What is a dns server?

1. DNS server is the abbreviation of Computer Domain Name System (Domain Name System or Domain Name Service), which is composed of a resolver and a domain name server. A domain name server refers to a server that stores the domain names and corresponding IP addresses of all hosts in the network and has the function of converting domain names into IP addresses.

The domain name must correspond to an IP address, and the IP address does not necessarily have a domain name. The domain name system adopts a hierarchical structure similar to a directory tree. The domain name server is the server side in the client/server model. It mainly comes in two forms: main server and forwarding server. The process of mapping domain names to IP addresses is called "domain name resolution".

2. When we set the IP address of the router, friends must be familiar with it. We need to enter the DNS settings, and generally fill in the local DNS address. As shown in the figure:

3. Why do we need to fill in the DNS address of the local network service provider? Because we are closest to the network connection of the local network service provider, so the DNS address of the local service provider can be set to the maximum Maximize the exchange speed between the computer and the network. Telecom or China Netcom in different regions across the country have different DNS IP addresses, so if you need to fix the local IP, you need to fill in the DNS address of the local network service provider's server. If you don't know what to fill in, don't fix the IP address and choose to obtain it automatically. Yes, if necessary, you can contact the network provider or check online.

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