Invited to small round table discussion with Global Head of IB

I've been invited to a small round table discussion with a Global Head of IB at my bank on Wednesday. Any ideas for two intelligent questions I can ask where I won't sound like a smart ass or a fool?

I'm a recent grad in a mid-office S&T group, as I discovered the field late and didn't understand how the new grad program worked in time for front office positions. Therefore, I am looking to make a switch, which does happen from my group. There will be everything from analysts to MDs in the room, so I'd like to make a good impression so I can network with the analysts, etc. and hopefully have the higher ups know I exist.