A DNS server, short for Domain Name System server, is a crucial component of the internet infrastructure. It plays a vital role in translating human-readable domain names into machine-readable IP addresses, allowing computers to communicate with each other.
What is DNS?
DNS is like a phone directory for the internet. When you type a website address into your browser’s address bar, such as www.example.com, your computer needs to know the corresponding IP address to establish a connection. This is where the DNS server comes in.
How does it work?
When you enter a domain name in your browser, your computer sends a request to the DNS server to resolve the IP address associated with that domain. The DNS server then searches its database for the corresponding IP address and returns it to your computer. This enables your browser to connect to the website you requested.
The importance of DNS servers on PC
DNS servers are essential for efficient internet navigation. They help speed up browsing by saving previously resolved domain names and their corresponding IP addresses in their cache. This way, when you revisit a website, your computer doesn’t need to query the DNS server again but can quickly retrieve the information from its cache.
Types of DNS servers
There are primarily two types of DNS servers:
1. Recursive DNS Servers:
Recursive DNS servers perform the entire process of resolving domain names on behalf of client devices. When your computer queries a recursive DNS server, it will traverse multiple steps until it finds the correct IP address for the requested domain.
2. Authoritative DNS Servers:
Authoritative DNS servers hold specific information about a particular domain or domains they are responsible for. They provide answers directly without needing to refer to other servers.
Configuring DNS settings on PC
To configure the DNS settings on your PC:
- Open the Control Panel and navigate to the Network and Sharing Center.
- Click on “Change adapter settings” in the left sidebar.
- Right-click on your active network connection and select “Properties.”
- In the Properties window, scroll down to the “Internet Protocol Version 4 (TCP/IPv4)” entry and click on “Properties.”
- Select the option “Use the following DNS server addresses” and enter the desired DNS server addresses.
Commonly used public DNS servers
Here are a few commonly used public DNS servers:
1. Google Public DNS
3. Cloudflare DNS
DNS servers are an integral part of internet connectivity, responsible for translating domain names into IP addresses to establish connections between devices on the web.
By understanding how DNS servers work and configuring them efficiently, you can improve your browsing experience while ensuring a smooth connection to websites.