How Domain Name Server (DNS) Works? Article

	1888 Articles Home \| Computer Articles \| Website Promotion Articles	Computer RSS
How Domain Name Server (DNS) Works?

Domain name Servers (DNS) are an important part of the internet, and make one of the largest databases on it. Each machine on an internet is assigned a unique address, called an IP address, which is 32 bit number and is expressed as 4 octets. The method user to represent these IP addresses is known as dotted decimal Notation".

Author: Owais Khan

Article Tools:

A typical address looks like this: 199.249.150.4

It is very difficult to keep in mind the IP addresses of all the websites we visit daily, because it's not easy to remember strings of numbers. In general, (DNS)Domain Name System also stores other types of information, such as (Mail Server) that accept Email for a given Internet domain. By providing a worldwide, distributed Keywords based redirection service, the Domain Name System is an essential component of the functionality of the internet .

DNS converts the machine names (such as www.xyz.com) to IP addresses (such as 199.249.150.9). Basically, it translates from a name to an address and from an address to a name.

A DNS server is a server that's running the DNS software. The most popular DNS software is BIND (Berkeley Internet Name Domain) DNS is hierarchical, tree-structured system. The top is donated by'.'. And is known as the root of the system. Below the root there are seven immediate sub domain nodes and these are 'com', 'org', 'gov', 'mil', 'net', 'edu', 'Int', etc.

DNS responses are traditionally not cryptographically signed, leading to many attack possibilities; theDomian Name Server Security Extensions (DNSSEC) modify DNS to add support for cryptographically signed responses. Several extensions have been devised to secure zone transfers as well.

About Author

Owais khan Quaiyumi
Web Developer

Article Source: http://www.1888articles.com