When you call a server

When you call a server by entering a URL, your browser first resolves the domain name to an IP address via DNS. Next, it establishes a TCP connection through a three-way handshake. Once connected, the browser sends an HTTP or HTTPS request to the server for specific content. The server processes this request, which may involve querying a database for data. After generating the response, it sends it back to the browser, which renders the content for display. If additional resources are needed, the browser will make further requests, following the same process.