Before we dive into understanding communication protocols, let's understand how the internet works since it is the backbone in the concept of IoT.
The internet is a global network of computers/systems connected to each other. Each system/computer has a unique Internet Protocol (IP) address as its identifier over the internet. But how exactly does one system interact with another? Through a protocol stack. It is also referred to as the Transmission Control Protocol (TCP) or IP protocol stack.
This table will help you understand TCP/IP:
|
Layer |
Description |
|
Application protocol |
Specific to application such as FTP, email, HTTP, MQTT, Socket, and the others. |
|
Transmission control protocol |
It is a standard that defines how to establish and maintain a connection between applications so that data transmission can take place. |
|
Internet protocol |
It... |