A DNS, or Domain Name System, is a fundamental component of the internet that translates human-readable domain names (like www.example.com) into machine-readable IP addresses (like 192.0.2.1) that computers use to identify each other on the network. This system acts like the internet's phonebook, allowing users to access websites using easy-to-remember names instead of numeric IP addresses
. DNS is hierarchical and distributed, meaning it delegates the responsibility of managing domain names across many servers worldwide, ensuring scalability and fault tolerance. When you type a domain name into a browser, a DNS query is sent to DNS servers, which then respond with the corresponding IP address, enabling your device to connect to the correct web server
. In essence, DNS makes the internet user-friendly by hiding complex numerical addresses behind simple domain names, facilitating everything from browsing websites to sending emails and playing online games
