{"id":22904,"date":"2024-10-17T10:00:57","date_gmt":"2024-10-17T10:00:57","guid":{"rendered":"https:\/\/orbitinfotech.com\/blog\/?p=22904"},"modified":"2024-10-17T11:32:30","modified_gmt":"2024-10-17T11:32:30","slug":"what-is-dns-domain-name-system","status":"publish","type":"post","link":"https:\/\/orbitinfotech.com\/blog\/what-is-dns-domain-name-system\/","title":{"rendered":"What is DNS And How To Use It"},"content":{"rendered":"

What is DNS?<\/h2>\n

DNS, or Domain Name System<\/strong><\/a>, is the internet’s phone book. We enter domain names<\/strong> like “google.com” into websites rather than a series of digits. DNS converts those memorable names into IP addresses, which are the distinct identifiers of every internet-connected device, in the background.<\/p>\n

Consider IP addresses<\/strong> as the exact GPS coordinates that the computer requires to find the website, but domain names are the street addresses we use. Although each device, server, and website has its own Internet Protocol (IP)<\/strong> address, most individuals would find it hard to remember those numbers. This is where DNS comes into play, making things easier.<\/p>\n

How does DNS work?<\/h2>\n

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As the internet’s phone book, the Domain Name System, or DNS, converts user-friendly website names into IP addresses that computers may use to connect. In order to determine the corresponding IP address, the DNS (Domain Name System) is triggered when you type a website name such as “example.com” into your browser.<\/p>\n

This is how it operates: Your browser first determines whether it has already visited the website by looking through its cache. If not, it seeks assistance from the DNS resolver, which is typically operated by your internet provider. Next, in a predetermined order, the resolver does many DNS server queries. It starts by examining the root server, which, depending on the domain extension (.com,.org, etc.), directs users to the Top-Level Domain (TLD) server. The authoritative name server then supplies the right IP address after receiving the location from the TLD server.<\/p>\n

Types of DNS Queries<\/h2>\n

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Each of the three primary categories of DNS (Domain Name System) queries has a specific function.<\/p>\n

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  1. Recursive Query:<\/strong> The DNS client asks for a completely resolved response in this kind of query. If the domain name cannot be located, the DNS server either produces an error or gives the proper IP address. Until the right outcome is obtained, the procedure is repeated on several servers.<\/li>\n
  2. Iterative Query:<\/strong> In this case, the DNS server does not answer the entire query. Rather, it directs the client to a different DNS server that is nearer the right response. Until it discovers the correct IP address, the client keeps asking questions.<\/li>\n
  3. Non-Recursive Query:<\/strong> This occurs when the DNS server is the authoritative server and already knows the answer, either from its cache. Without any additional searches, the result is returned right away.<\/li>\n<\/ol>\n

    Types of DNS Servers<\/h2>\n

    To understand how the internet functions, one must be aware of the various kinds of DNS servers. The primary kinds are as follows:<\/p>\n