Welcome to your interview.
The question is on your right: Network and OS Core Concepts. 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.
Tell me about core CS topics like networking and operating systems that you rely on in your work.