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Domain name system is the system dns that converts human-readable names (like “www.example.com”) into IP addresses (like 192.168.1.100). Without , your computer would be unable to connect to websites like www.example.com because the websites would not have an IP address assigned to them. also helps to prevent website hijacking, in which a malicious person or website gains control of a legitimate website’s settings and redirects traffic to their own website instead of the intended destination.
What is DNS and what does it do?
DNS, or Domain Name System, is the system that translates human-readable names like www.example.com into IP addresses (like 192.168.1.1). Without , your computer would be unable to lookup the website’s IP address and would have to contact the website directly on the internet.
How DNS works and how to protect your privacy
Domain Name System (DNS) is the foundation of the internet and it allows devices to communicate with each other by translating domain names into IP addresses.
When you type a website address into your web browser, your computer looks up the website’s DNS name—like “www.google.com”—and uses that name to translate into an IP address. This process happens automatically for most websites, but you can also manually set your computer to use a different DNS name if you want.
For example, if you wanted to visit www.buzzfeed.com on your computer, you could enter “buzzfeed.com” into your web browser’s address bar and your computer would use the name “buzzfeed.com” to translate that into an IP address.
But what if you didn’t want your computer to use the default name for a particular website? You could set your computer to use a different DNS name by following these steps:
1. Open your computer’s Control Panel (usually located in the Start menu under “Control Panel -> System and Security -> Administrative Tools -> Computer Management
Conclusion
Domain Name System (DNS) is a ubiquitous service on the Internet that allows computers to resolve domain names into IP addresses. When you type in www.google.com, your computer queries DNS for the name www and gives it back as an IP address, which is 174.125.67.222 in this case. This process happens every time you visit a website, regardless of whether or not you remember the website’s full URL (which might include http://www.google.com/plus/@+google).
