Have you ever wondered how typing a simple web address in a browser connects you to the vast world of the internet? Domain name systems (DNS) have been the essential component of internet functionality since 1985. Like a phonebook, a domain name system (DNS) fills the gap between computers and humans by matching dynamic domain names to respective internet protocol (IP) addresses. In January 2024, 3.78 trillion DNS queries are performed. Each domain name system has a DNS zone that links to DNS servers, which allows for editing of the zone.
In this article, you will learn about what DNS and DNS servers are, how DNS works, authoritative vs recursive DNS servers, the best DNS servers, how to perform DNS lookups to types of DNS queries, and much more,
Let’s dive in!
The domain name system (DNS) is like the Internet’s phonebook. People access information with domain names, such as google.com or vpsmalaysia.com.my. Web browsers interact through IP addresses. DNS mainly translates domain names to IP addresses so browsers load internet resources. Simply put, DNS is a protocol that can turn domain names into IP addresses browsers use to load Internet pages. The three-domain name system performs a taxonomic classification structure for grouping cellular life into three domains: Archaea, Bacteria, and Eukarya.
The DNS server is a vital component of the domain name system, translating domain names into IP addresses. The dynamic domain name System (DNS) is a hierarchical and dispensed name service that provides a naming system to computers, services, and other internet resources or IP networks. The DNS server plays a crucial role on the internet by translating human-readable domain names, such as www.example.com, into numerical IP addresses, like 192.0.2.1. This process allows users to access websites easily through memorable names instead of having to remember complex numerical addresses.
Domain name system examples are as follows:
1. Accessing Websites:
When the user types “www. google.com” into the browser. The domain name system (DNS) server translates the domain name into an internet protocol (IP) address like 142.250.190.78, which the computer uses to connect to Google servers. This translates to allowing access to websites without IP address remembrance.
2. Email Services:
When users email, the DNS server looks up the MX (Mail Exchange) records associated with the domain “gmail.com” (not “example.com”) to find the appropriate mail server’s IP address. This lookup allows the email to be routed correctly to the intended recipient’s mail server.
3. In CDN And Load Balancing:
CDN uses a domain name system (DNS) to direct users to the nearest server location for faster content delivery, such as ‘www.amazon.com.’ Geographic location optimizes streaming performance.
4. Gaming Servers:
Online gamers also connect players to appropriate game servers using DNS. When a user plays a game like Fortnite, the domain name system (DNS) directs the connection to the server to provide the best performance based on location.
When consumers enter a domain name and hit enter in the web browser’s address bar, they are taken to the desired website. However, this instant task comprises several steps called the DNS resolution process or DNS lookup. Examples of the domain name system resolution process tell how DNS works.
Some users want to go to the VPS Malaysia website and enter the domain name VPS Malaysia in the browser address bar. This is submitting a DNS request. Then, the user’s computer checks whether it has already stored a DNS entry of the domain submitted locally. A DNS records the IP address that matches the fully qualified domain name. The user’s computer searches its cache and host files. The host file is like a plain text file that maps hostnames to an IP address in the operating system. Meanwhile, cache is temporary data stored by software and hardware components.
Matching IP addresses for DNS service are commonly found in browser or internet service provider (ISP) caches. If no matching IP address is found in the host’s file and cache, the DNS resolution process will be enhanced with additional steps. This is how the domain name system works.
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