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This article mainly introduces what protocol is used to resolve domain names, the text is very detailed, has a certain reference value, interested friends must read it!

The protocol used to resolve domain names is the Domain Name Resolution Protocol, also known as DNS. DNS is a core service of the Internet, serving as a distributed database that maps domain names and IP addresses to each other, making it easier for people to access the Internet without having to remember IP strings that can be read directly by machines.

The protocol used to resolve domain names is the Domain Name Resolution Protocol, also known as DNS.

DNS is an abbreviation for Domain Name System, which is a core service of the Internet. As a distributed database that can map domain names and IP addresses to each other, it can make it easier for people to access the Internet without having to remember IP strings that can be read directly by machines. This is also the official DNS.

To put it bluntly, it is to communicate through IP addresses in the Internet. However, IP addresses are expressed in numbers, which are difficult to remember (such as 116.213.120.232), so each IP is given a domain name form that is easier for humans to remember (such as www.google.com), and DNS is used to resolve domain names into IP (the naming format that is convenient for people to understand is resolved into a format that computers can understand, and IP can also be translated into domain names).

DNS service: resolving domain names to IP addresses

Client sends domain name query request to DNS server (DNS server has its own IP address)

DNS server tells clients the IP address of the Web server

Client communicates with Web server

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