Pi Gyan

Pi Gyan India is giving you the basic concept of computer network taught in BCA and MCA courses in most of the leading universities in India.

In this video, we have covered the working of each layers of OSI Model in detail.

Computer Network | Layers of OSI Model

Open System Interconnection Model has 7 layers

Physical Layer (Layer 1)
Data Link Layer (DLL) (Layer 2)
Network Layer (Layer 3)
Transport Layer (Layer 4)
Session Layer (Layer 5)
Presentation Layer (Layer 6)
Application Layer (Layer 7)

This video will give you a basic idea about the working of physical layer of OSI Model.

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Initially, the keywords had buttons in alphabetical order. The typing speed because was that arrangement was fast for early computers. They used to hang often. So, to reduce the speed of a person, QWERTY keyboards were invented.