Osi model stands for Open System Interconnection
The concept of a seven-layer model was provided by the work of Charles Bachman
The upper layers of the OSI model deal with application issues and generally are implemented only in software. The highest layer, the application, is closest to the end user. Both users and application-layer processes interact with software applications that contain a communications component. The term upper layer is sometimes used to refer to any layer above another layer in the OSI model.
The lower layers of the OSI model handle data transport issues. The physical layer and data-link layer are implemented in hardware and software. The other lower layers generally are implemented only in software. The lowest layer, the physical layer, is closest to the physical network medium (the network cabling, for example, and is responsible for actually placing information on the medium.
this is the first Video :- OSI model in Hindi
Here is the 2nd Video which will cover Osi Model in Hindi Part -2
and this the bonus video i am adding , application layer Protocols
Here you can watch OSI model in hindi , if anybody wants OSI model in english from our trainer, Post in comment, we will get back to you in 3-4 days, Our trainers are working on full videos of Cisco.