A DNS (Domain Name System) server is a type of server that translates domain names into IP addresses. For example, when you type a website URL like www.google.com into your web browser, the browser needs to know the IP address of the server that hosts the website in order to connect to it.
To find the IP address of the server, your web browser sends a request to a DNS server. The DNS server then looks up the IP address associated with the domain name (www.google.com) and returns it to your web browser. Your web browser then uses the IP address to connect to the server that hosts the website.
Here’s another example: let’s say you want to send an email to john@example.com. Your email application needs to know the IP address of the mail server that handles email for the example.com domain. So, it sends a request to a DNS server to look up the IP address associated with the example.com domain. The DNS server then returns the IP address of the mail server to your email application, allowing it to send the email.
In short, a DNS server is a crucial component of the internet infrastructure that allows us to use domain names to access websites, send emails, and connect to other services, rather than having to remember and use numerical IP addresses.
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