What links a URL with an IP address when a Web page is requested?

When a web page is requested, the Domain Name System (DNS) translates the URL into an IP address. This process involves the user's browser sending a query to a DNS server to resolve the domain name into its corresponding numerical IP address. Once the IP is obtained, the browser can then establish a connection to the web server hosting the requested page. This link between the URL and the IP address enables the retrieval of web content over the internet.