For the proper functioning of the web, there is one essential server, and that is the DNS server. We don’t realize it, but it plays a major role in the Internet by connecting an IP address to a website. To fully understand how a DNS server works, please read on.
The Domain Name System (DNS) server or domain name system is required in translating the domain name into an IP address. It’s like a directory, a computer consults it when it accesses another computer through a network. It’s the Internet version of a directory except the user does nothing, it’s the Internet-connected computer that does everything. Concretely, this service associates an IP address with a website (server or computer), such as a telephone directory associating a telephone number with a subscriber name. For the record, the DNS was created by Jon Postel and Paul Mockapetris in 1983 currently, it has become essential in browsing the web. All Internet service providers have their own DNS servers with IP addresses in the form of a series of numbers and digits. The domain name and IP address are unique, and DNS allows the message to reach the recipient or someone with a similar domain name. You can go to Ns.tools, an online IP address and domain name configuration analysis tool.
Recursive DNS Server or Resolving Name Server: Like a librarian, he responds to a DNS query and requests the address from other DNS servers, he may also already have a record of the site’s IP address. It looks for the authoritative name server or DNS cache with the query result.
The DNS root server or Root Name Server: this is the name server for the root zone. This is the first step in translating human readable host names into IP addresses, such as a library catalog. It responds to direct queries, and it can return a list of authoritative server names for the corresponding top-level domain.
Top Level Domain or TLD DNS Server: This is one of the top level DNS servers on the Internet, and it’s like a special shelf in a library. It hosts the last part of a hostname (for example.com, the TLD server is.com).
The Authoritative Name Server: This is the end of a DNS query, and it contains the DNS record responding to the query. It contains the result of the DNS query. So if an authoritative DNS server is asked for one of its IP addresses, it does not need to query another server, as it is the final authority for domain names and the IP adress.
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