Domain Name System (DNS) What is the Domain Name System (DNS)? The Domain Name System (DNS) is a hierarchical system that translates human-readable domain names, such as www.example.com, into IP addresses, enabling devices to locate and access websites. Explanation DNS acts as the internet’s address book, simplifying navigation by converting domain names into machine-readable IP formats. It consists of DNS servers, records, and resolvers working in sync. Practical Example of DNS When you type a web address into your browser, DNS resolves the domain to its corresponding IP address, allowing the browser to connect to the correct server.