What is DNS?
DNS functions as a global directory system that translates domain names into IP addresses, making it possible for networked devices to communicate with each other on the internet or within internal networks.
How does DNS work?
When a user enters a web address in a browser, a request is sent to a DNS resolver. The resolver searches for the IP address in a hierarchical structure of DNS servers—from root servers to authoritative name servers—and returns the correct address to the client.
Examples of DNS Components:
- Root servers: Manage top-level domains (.se, .com, etc.)
- TLD servers: Store information about each top-level domain
- Authoritative servers: Provide final answers for specific domain names