That depends. There are subtle differences depending on what you want to emphasise, and the level of formality. It's more common to say 'question and answer' though. If you want to emphasise the Q&A process, say that in full. 'Communicate' is a little more formal. 'Talk' is more informal. 'interact' can imply other interactions, such as getting verbal cues. You need to get the forms of the verbs right though, .e.g . 'communicate with', 'talk to', 'question and get answers from', etc.