One challenge with Adobe Captivate is that there isn't a separate type of quiz question that is only to be used for knowledge checks. When I say knowledge checks, I mean the type of question that is there for the learner to simply test their knowledge up until that point. To me a knowledge check doesn’t interact with the course quiz in any way. This is difficult in Captivate. You can do surveys, but they don't give you the built in function for providing feedback. You can turn off the ability to have quiz questions contribute to the quiz but certain other issues arise as well.
Probably the best way to deal with this is to create your own interactions. In this video I use advanced actions (both kinds), user variables, all within a responsive design as well.