NBCUniversal Inernship interview questions

I was invited to take an online interview. In this interview, I had to answer 4 questions on the spot. It was all done independently via internet, remotely. After reading each question I had 30 seconds to come up with an answer, and record a video response via webcam. Retries were allowed. The challenging part is: 1. You don't know what the selected questions will be ahead of time and 2. You are speaking into a computer screen rather than having a conversation with a human.