Domain Name System


Domain name system (DNS) (Server \ Service) is a hierarchical, distributed database that encloses mapping of DNS to numerous types of data such as IP (Internet Protocol) addresses and serve memorizable names for websites as well as other services on internet. DNS allows you to use domain names: for example techterms.com or howstuffworks.com in the address bar of your web browser rather than the IP address. It automatically translates domain names into corresponding IP address to easily locate resources on a TCP network basis.

Well, DNS record is also known as resource record and is a primary component in domain name system. Here every record encloses numerous pieces of information, which contains expiration time limit, record type and specific data type. There are large amount of record types each describing the format of data and an idea to use proposed record, whenever it’s been sent over IP network, all DNS (Domain Name System) record conform to a format specified in RFC 1035 (Which encloses complete information of the protocol and domain system).

Why Domain Name is Important?

Domain Name System (DNS) are basic thing to internet because each and every internet connected gadget, whether it’s a laptop, system, gaming console or mobile phones first look up for each name in global DNS and make use of resulting internet address to connect the web server, send \ receive emails, for downloading purpose or use the World Wide Web.

Some of the Terms Associated with DNS:

  • Forward DNS: It is actually mapping of hostnames to IP address
  • Origin: It is referred to the domain enclosed in an exacting zone file
  • Resolver: Usually built into the network operating system through which queries a name server for zone information
  • Reverse DNS: It is actually mapping of IP address to hostnames
  • Zone: An individual portion, domain or sub domain of the DNS administrated by the same authority.
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