The basic idea is to assign names to physical addresses. DNS, short for Domain Name System, is a hierarchy of distributed database for computers or other resources connected to the Internet. It is like a phone directory of the Internet that provides access to information through domain names. DNS is fundamental to the operation of virtually all Internet Protocol IP network applications, from web browsing to email, multimedia applications, and more.
It converts human readable domain names like Google. DNS is a standard set of protocols that allow computers to communicate via the Internet. It is a dedicated server on the web designed to help you find websites by domain names. It is similar to the contacts list on your phone where instead of memorizing phone numbers, you assign names to numbers. Name servers work similarly by assigning an IP address to a domain name so you only have to remember the domain name instead of the IP address, which is convenient.
A name server links your registrar to your hosting service provider. You need to change your name servers if your registrar and your hosting service provider are two separate companies.
However, you do not need to do so, if your registrar and hosting service provider are the same company. The public name servers respond with the IP address; your computer dials the IP address and pulls up the web page associated with it. It is fundamental to the operation of virtually all Internet Protocol IP network applications, from web browsing to email, multimedia applications, and more. Name servers, on the other hand, host or cache these translations. A name server is a server that hosts a name record or a referral record for a domain name.
They not only simplify network management but also make networks more dynamic and responsive to changes. If a name server is present in a network, the host only needs to know the physical address of a name server and the name of the resources. The DNS is a specific implementation of the concept of name servers optimized for the prevailing conditions on the Internet.
Previous Difference Between Encryption and Encoding. Next Considerations for a Reliable Network. Recommended Articles. Article Contributed By :. Easy Normal Medium Hard Expert. Writing code in comment? Please use ide. Load Comments. What's New. A domain is a piece of string that helps to identify a website. The domain name contains an extension to represent the type of the website or the company the website belongs too. Figure 1: Domain Extensions.
When the user visits a website or a webpage, the web address or its location on the web appears on the top of the web browser screen.
An example is as follows. This is the unique name belonging to the registered owner, and it points to the home page of the website. Once he purchases a domain for his website, it is unique to him for the period of registration. When the user avoids renewing, that domain will be available to some other user.
An individual or an organization can purchase a domain for their website for a reasonable amount. It is not possible for the users to type each IP address. DNS is the solution to this issue.
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