In this post we will explain about meaning of dns in computer.
DNS meaning in computer:
Domain Name System (DNS) is the phonebook of the Internet. it translates domain names into IP addresses so that browsers can load them. DNS is known by many names, including name servers, domain name system servers, and nameservers. Each device connected to the Internet has a unique IP address that other machines use to locate the device. The Domain Name System (DNS) is a hierarchical naming system built on a distributed database for computers, services or any resources. Most importantly, the Domain Name System translates human readable domain names into numeric ones.
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What is the purpose of DNS and it’s example?
The purpose of DNS is to translate domain names into appropriate IP addresses. This is done by looking at the DNS records of this DNS lookup process which usually consists of eight steps that follow the information path from the original web browser to the DNS server and back again.
DNS translates human-readable domain names (for example, www.amazon.com) into machine-readable IP addresses (for example, 192.0. 2.44).
For example, when a web address (URL) is typed into a browser, DNS servers return the IP address of the web server associated with that name.
DNS Servers and IP Addresses:
A DNS server stores specific information that associates a domain name with particular IP addresses. A domain can have one or hundreds of IP addresses associated with it. Internet services require a network of distributed and scalable DNS servers to ensure that users can quickly view and resolve requested server locations, no matter where they are around the world.
How DNS Servers Work?
Nowadays everything that connects to the Internet—websites, tablets, laptops, mobile phones, Google Home, Internet thermostats, and refrigerators has an IP address. Digital tools for communicating via the World Wide Web. DNS directories are distributed around the world, stored in specialized servers called DNS servers (i.e., “domain name servers”) that are interconnected and regularly interconnected to synchronize directory information and create redundancy. An Internet Protocol address by its full name is a unique string of numbers that identifies each.
DNS perform some operations and also operates a client/server network system that performs the following functions:
- Send requests to DNS servers and receive responses from them. Each request has a name that results in the corresponding IP address
- This is known as Forward DNS Lookup.
- In addition to forward lookup, DNS may request reverse lookup which queries the IP to determine the associated domain name.