Under what conditions and for what purposes is the domain name system (DNS) used?

The Domain Name System (DNS) is used to convert human-readable domain names (e.g., example.com) into IP addresses, which are necessary for routing requests on the internet.

DNS is used:

• To simplify access to resources on the network, so users do not have to remember numerical IP addresses.
• In testing and automation processes to verify the correctness of domain name resolution and service availability.
• For load balancing and traffic management through various DNS records.

For example, when entering a website address in a browser, the DNS server translates the domain name into the IP address of the server hosting the site, ensuring proper connection.