No and no.

We as Americans (and people, in general, around the world) have a right to know what exactly is going down and went down after September 11. I'm not entirely sure what they asked him about, but I don't believe that really matters, anyway.

Executive privilege, as a refresher, is never explicitly stated as a perk of the executive branch, but has rather been implied by nearly every president dating all the way back to the beginning with George Washington.