How do you Resolve host names by using DNS?

To resolve host names using DNS (Domain Name System), a client first sends a query to a DNS resolver, typically provided by the user's internet service provider. The resolver checks its cache for the requested hostname; if not found, it queries authoritative DNS servers, starting from the root servers down to the relevant domain servers, until it retrieves the corresponding IP address. Once the IP address is obtained, it is returned to the client, allowing it to connect to the desired host. This process may involve multiple steps but typically completes in seconds.