is packet how a web page is divided into sections before being sent to the address that requested the page?
No, a packet is not how a web page is divided into sections before being sent to the address that requested the page.
A packet is a unit of data that is transmitted over a network. When a web page is requested by a browser, the web server sends the page in the form of packets. These packets travel over the internet and are reassembled by the recipient's browser to display the web page.
The division of a web page into sections, such as headers, body, and footer, is done using HTML and CSS coding on the server-side before the page is sent as a whole in packets to the requesting address. The packets themselves do not contain pre-divided sections of the web page.