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Internet of Things with Raspberry Pi 3

You're reading from   Internet of Things with Raspberry Pi 3 Leverage the power of Raspberry Pi 3 and JavaScript to build exciting IoT projects

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Product type Paperback
Published in Apr 2018
Publisher Packt
ISBN-13 9781788627405
Length 248 pages
Edition 1st Edition
Languages
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Author (1):
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Maneesh Rao Maneesh Rao
Author Profile Icon Maneesh Rao
Maneesh Rao
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Toc

The internet

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...

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