Welcome to your interview.
The question is on your right: OSI Model and TCP/IP. Take a moment with it first.
Talk your thinking through with me if you like - when you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes). Discussion and graded submissions share your five interviewer interactions, so spend them well.
What is the OSI model, and how does it relate to TCP/IP? Walk through the layers, explain the purpose of each, and describe how the two models map to each other in real networking.