Another irrelevant and nonsense question. Since they don't explain the role and most people will need to actually be in the role to see if they like it or not. It's like buying a car, you need a test drive first to see if you want it. They just assume because candidates take their call they want the job. NOT.
What a silly question. But it really does make sense. It shows your thinking skills. The difficult question was, "What was your greatest accomplishment?". It is really hard to answer a question like that without sounding over confident.