What does dns mean?

DNS (Domain Name System) is a distributed naming system used in the Internet to convert domain names into IP addresses. It acts as the "phone book" on the Internet and converts easy-to-remember domain names such as www.example. com is mapped to the corresponding IP address such as 192.0.2.1. DNS is a hierarchical and distributed system composed of multiple DNS servers, including root servers, top-level domain name servers, authoritative domain name servers, and local domain name servers.

DNS (Domain Name System) is a distributed naming system used in the Internet to convert domain names into IP addresses. It acts as a "phone book" for the Internet, mapping easy-to-remember domain names (such as www.example.com) to corresponding IP addresses (such as 192.0.2.1).

On the Internet, every device needs a unique IP address to communicate. However, people are more likely to remember meaningful domain names than a string of numbers. This is the role of DNS: when we enter a domain name in the browser, the browser will send a request to the DNS server, and the DNS server will return the IP address corresponding to the domain name, and then the browser can find and connect to the domain name through the IP address. target server.

DNS is a hierarchical, distributed system composed of multiple DNS servers. These include root servers, top-level domain name servers, authoritative domain name servers, local domain name servers, etc. These servers collaborate with each other to provide domain name resolution services through querying and caching to achieve domain name to IP address conversion.

In short, DNS allows us to use easy-to-remember domain names to access various resources on the Internet without having to remember complex IP addresses. It is a vital part of the Internet infrastructure.

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