What is Knowledge? Knowledge is our Q&A Platform where you can post questions related to your Nanodegree program content and projects. Your questions can be answered by either your fellow students or a Udacity staff. You can also reply to other people's questions there if you know the answer! If you have content-specific or project-related questions, the best place to look for answers is Knowledge. Chances are someone has already asked a similar question. The search results are filterable by Nanodegree program and project.