The Domain Name System (DNS) is a fundamental part of the Internet, acting as a phone book that translates domain names into IP addresses. This system is responsible for managing the mapping between names and numbers, allowing users to access websites by simply typing a domain name into their web browser. In other words, DNS resolves names into numbers; more specifically, it resolves domain names into IP addresses. For example, if all the employees in an office need to access the same training video on a specific website on the same day, the local DNS server will only have to resolve the name once, and then it can handle all other requests from its cache. This helps to reduce the amount of time it takes for users to access websites, as well as reducing the load on the server. The DNS system is an essential part of the Internet, and understanding how it works is key to ensuring that your website is accessible and secure.
By understanding how DNS works, you can ensure that your website is properly configured and that your users can access it quickly and securely.