Welcome to your interview.
The question is on your right: How Java Garbage Collection Works. 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.
Can you explain how garbage collection works in Java, including how the JVM determines what is collectible and how generational GC improves performance?