What is a domain and how is it related to DNS?

A domain is a unique name used to identify a website or resource on the internet. It is a human-readable address, for example, example.com, which replaces the numerical IP address of the server.

DNS (Domain Name System) is a system that translates domain names into IP addresses. When a user enters a domain in the browser, DNS servers find the corresponding IP address to establish a connection with the desired server.

Relationship between domain and DNS:

• A domain is a name that a person uses to access a resource.
• DNS is a service that provides the conversion of this name into a technical address (IP) understandable by computers.

Example: when entering google.com, the browser contacts DNS, receives the IP address of Google's server, and establishes a connection with it.