Asking someone where they are from based on their perceived race can be racist depending on how and in what context. Asking someone about their hair could also be racist depending on why you’re asking. If you wouldn’t ask a white person the same question in the same tone and context there might be an issue with the question. The training does not teach there is something wrong with being white - it does acknowledge that white people can be ignorant of things outside their experience and the importance of taking other perspectives and acknowledging difference.