What is meant by DNS Server, let's get to know this cool technology

Hello Friends of Tuban.eu.org, Lately you must often hear the word "DNS", right? You know, technology that can unblock an application or website. But do you know the true meaning and function of a DNS? Instead of being curious, let's just look at the explanation of what DNS Server is below!

Definition of DNS

DNS actually stands for Domain Name System. As the name implies, DNS is a system that converts or translates a website's URL into an IP address. So this system makes it easier for us when we want to visit a website.

You know basically when we want to visit a website, we have to type in the website's IP address so that our computer system can access the website. Without the help of DNS, surely we will find it difficult to access a website because we have to remember the IP Address in the form of an arrangement of numbers for each website we want to visit.

Therefore, we need DNS to help us translate URLs into IP addresses. So, we only need to remember the domain name of the website we want to visit, and later DNS will convert the domain into an IP address that the computer understands.

DNS Function

Apart from that, are there any other functions of DNS? Of course there is! DNS is indeed the main function is to translate URLs into IP addresses, but there are still several other functions of this system, you know! Here, another function of DNS:

•Looking for host addresses to fulfill client requests.
•Defines the server for sending email.
•Securing data transfer activities when users access a website.
•Search for the appropriate data on the server database to be displayed on the user's browser.

How DNS Works

Well, you already understand more about the functions of DNS, but do you know how DNS works? Let's see the explanation below:

1. DNS Queries

The first stage carried out by DNS is DNS Query. At this stage, when you enter a URL in the browser, DNS will automatically look for the IP address of that URL in the host server file. However, if this information is not found, the server will look for records of information that have been recorded (cache) on the server system.

2. DNS Recursive Resolver

The next step taken by DNS is Recursive Resolver. At this stage, if an information is not found in the cache server, the system will look for that information elsewhere, namely at the Internet Service Provider (ISP).

3. Root NameServer

This third stage is carried out if the information you are looking for is not found at the ISP. Well, at this stage DNS will try to find the information you requested in the Root Name Server, which is a database that answers questions about domain names and IP addresses.

However, you need to remember that the Root Name Server does not have all the information regarding the hostname and IP address. Therefore, this server will forward requests for information to third parties who have the information.

4. TLD Name Server

This stage is the stage where the system will search for information using a top-level domain through the Root Name Server. Oh yes, the TLD Name Server itself is the last part of the domain name which is located after the last dot on the domain, for example id, com, and so on.

So by using this, the system can forward the search for information to the server that has it.

5. Authoritative Name Server

Now, after the system finds the desired server, we come to the Authoritative Name Server. This server has all the information related to the intended website. Therefore, if you have arrived at this process, the system will display the web page that you originally entered into the browser.

Well, that's how the DNS Server works. Quite complicated, isn't it? However, the process above is executed quickly by the system so that we don't realize that there is a process that is as complicated as that when we access a website.

Those are some explanations of what DNS Server is and its functions and how it works.
It turns out that accessing a website is a long process, isn't it?!? Interesting right? So, if you have other information regarding DNS that is not listed above, you may write it directly in the comments column.