Full form of DNS
Full form of DNS is Domain Name System.
The Domain Name System connects URLs with IP addresses. It is based on the IP system. For the working of DNS, DNS servers are required for working of DNS. The IP address determined with the help of look-up table. Each and every computer or website has its unique IP address.
IP address is long numeric number or code. To load internet resources, it translates domain names into IP addresses. And the domain name used in this system is alphabetic and simply recalled.
For example, the domain name of website – www.digitalclassworld.com and with the aid of DNS it will converted into IP address 198.105.232.6.
How does DNS works?
The DNS converting the hostname (i.e. www.digitalclassworld.com) into computer friendly IP address (i.e. 198.105.232.6). The alphabetic domain names are become easy to remember than IP address for people. With the help of DNS servers, the DNS working can be processed. IP address determined with the help of look-up table. It transfers the supplicated information to the user’s web browser through the servers.
The DNS contains its arrangement for the interconnection network. If one DNS server doesn’t know how to convert specific domain name, it will needed another server, then the other next server and so on, till they don’t get accurate IP address. The DNS server carry out the directory of all the IP addresses with domain names, so they can be recovered when required.
Advantages
The DNS automatically fixes the errors.
The supplications are responded through Anycast technology by the nearest element in the case of downtime or maintenance.
The users can receive the substantial messages with zero downtime.
Disadvantages
When there are more than one root server or backup servers are exist, the World Wide Web crashed through the DNS breakdown, which leads to enormous damage in specific locations.
The DNS root registry can be controlled by ICANN which connects one particular nation and disputes the abstract ideas of net neutrality.
Features of DNS
The extra list of the data can also be reserved in DNS database.
DNS consists of dispersed database.
Provides great user interface and functioning.
It contains the list of types of data for making other applications easier.
Any type of application joins for sharing some information from more than one host, which depends on the DNS.