Domain Names
As we can see, there are thousands and even millions of websites that exist already over the World Wide Web using different web hosting packages. These websites has a corresponding IP addresses. And since not everyone has the capacity to remember unique combination of numbers, thus, the domain names system was developed.
The domain name system or the DNS, as it is called, is a representation of every website being uploaded. The DNS translates the binary code into a more understandable and readable codes. This is for the user to simply remember the website’s name. It is easier to memorize words over numbers. The DNS is a database for all the websites but not using the site name itself. The DNS will convert the site name into digits since it does not understand characters. Every website has a corresponding IP address. These IP addresses is changed by the DNS to locate its corresponding address and will then submit it to the server to be able to be viewed through the internet using the web hosting package. IP addresses are used for communicating with the Internet Protocol Suite. These addresses are the addressing method of data and the packets over the internet world.
There are four characteristics of DNS.
1. Distributed. This characteristic allows authorization to multiple administrators.
2. Consistent. It gives back what was being requested.
3. Reliable. Avoids any redundant information. Transfer or change them if there’s any.
4. Autonomous. Can make changes independently.
DNS is a distributed system. It has its own database wherein all the websites registered to every web hosting. But the DNS database keeps only the converted IP names. DNS consists of Root or Server, Resolver and Content. The server is the one who keep tracks of the name of the servers. Every data here are unique and can be located anywhere in the world. The resolver function is to query the name server. Since DNS is a client-server model, the resolver acts as the middleman who bridges the client and the server. And the Content has many functions that include the translation of server name to IP address and mail routing.
What does its connection over web hosting? Simple, the website names are simply the domain names. DNS converts the websites into IP. Every computer covering the internet consists of complex number. Technically, these are the IP (or Internet Protocol) addresses of the websites converted into words for the purpose of those who are not fond of memorizing complex number. And besides, the more words we see are better than the fewer digits.
The DNS is considered also as the Directory of Internet. Every DNS are unique. Each IP address has its own distinctive domain name. Domain names are exclusive but can be accessed globally. Websites are stored here. In managing the DNS records, a domain name server is needed. It is quite expensive since it is played by the web hosting provider. Though it is costly, it will be an assurance that these organizations will provide a good service in terms of correct values of DNS records.
