Your question is Explain the OSI Model with Traffic Flow. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Tell me about the OSI model in detail, specifically describing how traffic initiates and moves through the layers.
Explain the purpose of each layer, the protocol data unit and common protocols associated with it, and how encapsulation occurs at the sender and decapsulation at the receiver. Include how switches, routers, and other network devices interact with the model, and relate the OSI layers to the TCP/IP model.
Keep the explanation focused on standard enterprise networking concepts.