{"id":73678,"date":"2019-12-01T18:03:32","date_gmt":"2019-12-01T18:03:32","guid":{"rendered":"https:\/\/www.whizlabs.com\/blog\/?p=73678"},"modified":"2021-03-16T11:34:05","modified_gmt":"2021-03-16T11:34:05","slug":"how-dns-works","status":"publish","type":"post","link":"https:\/\/www.whizlabs.com\/blog\/how-dns-works\/","title":{"rendered":"A Guide on How DNS Works"},"content":{"rendered":"

What is DNS? It can be simply understood as the data book of the web. Some also claim it as the digital phone book. Users, in general, collect information over the web through the domain name. In the case of the browsers, the communication occurs through IP or Internet Protocol address. <\/span><\/p>\n

So the questions like what is DNS can be simply understood as DNS converts domain names in terms of IP addresses to enable the browsers to provide web resources. What is DNS and how it works is one of the frequently asked questions in modern times? The following abstracts discuss each aspect about it with utmost clarity and the simplest possible way.<\/span><\/p>\n

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Anyway, one must first understand that every device linked with the web has an explicit IP address that other devices make use of for distinguishing it. So, the simplest answer for what is DNS and how it works would be that DNS servers abolish the burden on human memory to keep the IP address in mind. <\/span>The following abstract discusses how DNS works step by step for greater understanding. \u00a0 \u00a0 \u00a0<\/span><\/span><\/p>\n

Basics of How DNS Works?<\/span><\/h2>\n

The method of DNS resolution is simply about turning the hostnames into a system-friendly IP address. In general, an IP address is provided to every device, as explained above. As a user goes for uploading a webpage, it becomes important for the user inputs to be translated into the form to be understood by the browser.<\/span><\/p>\n

\"how<\/p>\n

It means a device-friendly address is felt necessary to find out the concerned webpage. This is like the basic thing one must understand before getting into how DNS works step by step. It is important to get it well about the various hardware segments associated with those the DNS query should go through before understanding the method behind the DNS resolution. <\/span><\/p>\n

In the case of the browsers, the process of checking DNS checking is taken place at the back and needs no communication from the device of the user, apart from the first query.<\/span><\/p>\n

If you are not at all familiar with the term DNS, read our previous article on DNS Records<\/a> to learn the basics.<\/p><\/blockquote>\n

Types of DNS Servers Associated with Webpage Loading<\/h3>\n

Before understanding how DNS server works, it is essential first to know about the different types of DNS servers associated with the process of webpage loading. <\/span>Given below are the 4 DNS servers associated with the webpage loading.<\/span><\/p>\n

1. DNS Recursor <\/span><\/h4>\n

The DNS recursor is simply like a department that is often asked to look for something anywhere within it. To understand how DNS server works technically, one should first get that it is primarily a server made to collect queries from the device of the client through web browsers and the apps. It is associated with making extra queries to provide an accomplishing answer for the DNS query. This fundamental aspect should be understood before going into how DNS works.<\/span><\/p>\n

2. Root Nameserver <\/span><\/h4>\n

This server is the initial step of converting the hostnames in the form that can be understood by the users in the form of IP addresses. It can be treated as a pointer that points to the various segments of the collection. In short, it works like a reference for the different targeted destinations. It can be understood as the first step of the questions like how DNS works. <\/span><\/p>\n

3. TLD Nameserver <\/span><\/h4>\n

The TLD name server or the Top-Level Domain server can be considered as a certain segment of the collections within the entire database. It is the most fundamental step through the process of searching for a particular IP address. Also, it hosts the final section of the name of the host, or simply those like \u2018.com\u2019 or \u2018.in.\u2019 These little things are essential to understand how DNS works. <\/span><\/p>\n

4. Authoritative Nameserver <\/span><\/h4>\n

Coming to Authoritative nameserver, the prime purpose of it is simply to translate. On a broader note, it helps in translating a certain term in the form of a definition. This is the final step in the searches made within the nameserver. In case the authoritative name server gets the accessing the records asked for or requested for, it is simply going to deliver back the IP address for the concerned hostname within the DNS recursor that processed the first request.<\/span><\/p>\n

So, these are the four DNS servers one should understand for knowing how DNS works.<\/span><\/p>\n

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Distinguishing Authoritative DNS Server and a Recursive DNS Resolver<\/span><\/h3>\n

This is a very fundamental question that one must understand before going into detail about how DNS works. One can simply understand that both the server and server resolver point to a collection of servers that are united with the DNS model, though each of its acts differently and remains at a different destination within the list of a DNS query. To make things simpler, one may understand that the recursive resolver appears at the initiation point of the DNS query, and the authoritative name server appears ultimately in the ending point.<\/span><\/p>\n