What happens when you enter a URL in the browser (https://google.com)? Describe the entire process from input to content display.

When you enter the URL https://google.com in a browser, several steps occur:

1. URL Parsing: The browser determines the protocol (HTTPS), domain (google.com), and path.

2. DNS Query: The browser contacts a DNS server to obtain the IP address for google.com.

3. TCP Connection Establishment: The browser establishes a TCP connection with the server using the obtained IP and port 443 (for HTTPS).

4. TLS Handshake: A secure connection (encryption) is established via the TLS protocol.

5. Sending HTTP Request: The browser sends a GET request to the server with headers.

6. Server Processing: The server receives the request, processes it, and forms a response (HTML, CSS, JS, images, etc.).

7. Receiving Response: The browser receives an HTTP response with a status code (e.g., 200 OK) and body.

8. Parsing and Rendering: The browser parses HTML, loads additional resources (scripts, styles, images), executes JS, builds the DOM, and displays the page.

9. Script Execution and Interaction: After loading, the page becomes interactive.

Thus, from entering the URL to displaying the page, many network and computational steps are involved, ensuring correct loading and display of content.