How the Internet works
The internet consists of 7 network layers to communicate with each other which are:
Physical layer: Wires and transmission that handle physical aspects of networking.
Data link layer: Reliablity transmission of data over a physical link by implementing error detection and correction mechanisms.
Network layer: Handles the routing of data between different networks by using protocols such as IP (Internet Protocol).
Transport layer: Provides end-to-end data transfer between two devices by using protocols such as TCP and UDP.
Session layer: Establishes and manages communication sessions between devices, including authentication and encryption.
Presentation layer: Responsible for data formatting, encryption, and compression.
Application layer: Provides services to applications such as email, web browsing, and file transfer. (HTTP protocol is here!)
This video by Rhymu is a great intro for in-depth details of how the Internet works