You can deliver a superior presentation, but the audience will ultimately decide whether they trust you or not during the Q&A session. If they perceive that you’re answering all questions openly and honestly, you will earn their respect and trust. On the other hand, if you’re defensive or evasive, they’ll start to doubt everything you’ve said. (If he lied about this, what else would he lie about?) To handle the Q&A session effectively, you need to know the basic etiquette. Just watch the video.