Welcome to your interview.
The question is on your right: Documenting and Communicating Failures. 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.
Given a hypothetical system failure, how would you document the issue and communicate it to the client?