DNS Basics
The basics of DNS include understanding how domain names are organized and managed. Each domain name consists of multiple levels, such as a top-level domain (TLD) like .com or .org, followed by second-level domains and subdomains. Registrars manage these domain names and can associate specific IP addresses through DNS records.
How DNS works
DNS uses distributed network servers to store and manage domain name information. When a user enters a domain name in their web browser, the browser sends a request to the local DNS resolver, which then queries other DNS servers to find the IP address corresponding to the domain name. Once found, the IP address is returned to the browser to connect to the desired website.
DNS server function
DNS servers perform several important functions when managing and resolving domain names. They store authoritative records for specific domain names, cache information to improve performance, and facilitate communication between different parts of the Internet infrastructure. In addition, they help prevent unauthorized access and ensure accurate domain name resolution.