Question

Discuss the functioning of a web browser.

Answer 1

A web browser functions through a continuous cycle of requesting, receiving, rendering, and executing data:

• Request: Translates a typed URL into an IP address via DNS and sends an HTTP/HTTPS request to the target web server.
• Receive: Collects the website files sent back by the server, including HTML markup, CSS stylesheets, JavaScript code, and media assets.
• Render: Parses the HTML and CSS to build a visual structure, calculating element layouts and painting pixels onto the screen.
• Execute: Runs scripts via its JavaScript engine to handle user interaction, dynamic page updates, and background data loading.