What are the Features of DNS?

Abhijeet Modi/ July 23, 2021/ Blog

It would be really difficult for people to search for different web pages on the internet if they had to use the IP addresses of the device, instead of its domain name. It generates a map between the website and its IP address, allowing users to find any webpage on the internet easily while the DNS handles the process of finding the IP address attached to the domain.

In other words, the domain name system is responsible for translating the website’s domain into its IP address, making the web page easily accessible to the users. In this post, we will walk you through a few exciting features of DNS. Let’s get started:

Authoritative and Recursive DNS Server

Both authoritative and recursive DNS servers are crucial components of the DNS infrastructure. However, they both perform differently and play a unique role in executing the DNS query. The recursive resolver is responsible for executing the recursive query submitted by the user. The server keeps making multiple requests until it gets to the authoritative nameserver and finds the requested records efficiently. However, the records may or may not be found – depending on where they are located.

Authoritative server, as the name suggests, is where the DNS records are held. In other words, it stores the necessary information. Unlike the recursive servers, the authoritative server does not need to query another resource in order to fetch the requested details. It will rather execute the final query of searching for the IP address from the domain name by looking for the numerical terms in its database.

Different Records

The DNS is associated with different DNS records that help accomplish different functions of the DNS lookup services efficiently.  You could set up an A record, CNAME record, TXT record, and other extensive range of records in order to make the DNS queries a smooth and flexible procedure.

DNS Resolver

Another crucial component of the DNS is its resolver, which plays the first step in running the DNS lookup service. The DNS resolver is all about handling the person who initiated the request for translating the domain name of the website into the IP address. The resolver submits a set of queries until the IP address of the requested web page is located.

DNS Caching

Caching is the process of storing the data on remote servers temporarily in order to boost the performance as well as the versatility of the requests. The main purpose of the DNS cache is to store the data as closer to the client’s current location as possible. Not only does it reduce the time required for processing the requests, but caching reduces bandwidth consumption. Now that the database for the IP address is located close to the client requesting the query, it gets a whole lot easier for the person to find the requested information.

So, these were the top features of the DNS that help simplify the process of running a DNS query. It is done to ensure that the query is executed seamlessly.

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