Introduction
Networking is a very huge topic, it encompasses all aspect of data communication. From your mobile device to the wires/wireless signals to the machines in between your device and the device you are communicating with.
Don't worry, in this post we will cover all the aspects networking for you to understand the basics of networking.
To start with lets ask the most basic question.
How does a computer/mobile device communicate to the web site google.com?
With this simple question we can cover all aspects of networking.
To answer this, we need to map out an assumption of what are involve in this question.
Assumption 1: Your device is in your home connected to the router provided by your internet service provider(ISP).
Assumption 2: google.com website is also inside some commercial building with a router provided by an internet sevice provider.
Assumption 3: The internet service providers have agreed to build a physical link and machines that send and receive data.
Based on the assumptions above, we can clearly conclude that there are multiple devices involved.
- Your computer or mobile device
- The router provided by your ISP
- The router provided by google's ISP
- The machine/computer that hosts google.com website
- The machines and physical medium within the ISPs and its peetrs. (The Internet)
Now it is easy for us to trace the communication from your device to google.com by walking through each devices.
Up next we will discuss the OSI network model which is a common model taught by many schools/networking vendors like cisco and others.
