I can kind of see how he or she feels, even though I don't think he / anyone you should ever be afraid to ask a question, to a teacher or anyone else, if it benefits their learning. It is definitely much easier to ask a question, especially if you 'feel' like a n00b or that someone will give you crap for something they figured you should just 'automagically' know, to folks who don't know you by name or face, and can just anonymously ask online.
So I understand the reasoning for asking here, versus asking a teacher, if it better suits your comfort levels. Hopefully, however, your teacher would be perfectly understanding and supportive of your asking the question. Worst case, ask them after class, or somewhere where it's 1 on 1 conversation, but they are there for you to learn. Take advantage of it while you can! Regardless, questions asked here, in true desire to learn, will likely always get you an answer, assuming it's something one of us knows, too!
Good luck and continued success in your learning, wiiGenocide!
~ hayabusa ~
"All men can see these tactics whereby I conquer, but what none can see is the strategy out of which victory is evolved." - Sun Tzu, 'The Art of War'
OSCE, OSCP , GPEN, C|EH