Answer (1 of 3): Everyone knows the "Divide And Rule" rule works always and it's productive too.Easy to understand networking. The usual stated reason for this QUESTION is that the OSI model is “too theoretical” and “doesn't apply to modern networking protocols like TCP/IP”. OSI (Open Systems I...| Quora
One of the most enduring models in networking is the famous seven-layer OSI model. X.25 roughly, but pretty accurately, is based on the first three layers. And it stopped there. Subsequently - partly because of technology and partly because of marketing - Layers 4 through 7 have taken on a life of their own in the network as well as the applications.| Network World
Network technology has evolved, especially since the arrival of artificial intelligence (AI), and the role and the value of the router has grown significantly,| Network World