How to understand OSI model in Nepali.
https://www.youtube.com/watch?v=ImxCi2ec9qM OSI Model: 1) Application layer : key word is : interaction between human using application like: browser, any application like chat software, zoom, teams etc 2) Presentation layer : key word - translates the date in correct format : Like: video file:mp4, avi | audio file: mp3, wav | image file : jpeg, png, gif etc | document file : doc,.xls, txt etc 3) Session layer : create and maintain the session - time | key word: = timeframe the bank website will close automatically in 5 mins. | facebook will close within 30 mins automatically. | For security we need sessions. 4) Transport layer: source to destination delivery of data | key word : delivery of data | TCP and UDP TCP : Transmission control protocol : Get Confirmation (reliable)| 3 way handshake | Phone call/ browsing the internet page. (TCP) UDP : User Datagram Protocol : No Confirmation (Not reliable) live radio transmission | audio, video (real time ap