L32: Networking Basics For Ethical Hacking How Two Devices Communicate In a Network | The Easy Concepts
In this tutorial, we have discussed the basics of communication between two devices in a computer network.
In simple terms, a Computer Network is two or more computers connected together for the purpose of communicating data using a set of rules or standards which are known as protocols.
OSI is a conceptual model that characterizes and standardizes communication using a set of protocols. It consists of 7 layers – Application, Presentation, Session, Transport, Network, Data Link Layer, and Physical Layer.
There is another model that helps to determine the way a specific computer should be connected to the internet and how it should transmit data between them. It is called the TCP/IP model has 4 layers – Application, Transport, Internet (Network), Network Interface.
Private and Public IP Address Ranges
Certain IP addresses are reserved for public use and others for private use. This is what makes private IP addresses unable to reach the public internet because they aren't able to communicate properly unless they exist behind a router.
10.0.0.0 to 10.255.255.255
172.16.0.0 to 172.31.255.255
192.168.0.0 to 192.168.255.255
Excluding the addresses above, public IP addresses range from 1 to 191.
Please watch the full video to learn the concepts in more detail.
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