If you have never studied Chinese before, you may sign up for CHIN 0100 and you do not need to take the exam.
If you speak Mandarin fluently but cannot read and write in Chinese at all, you may sign up for CHIN 0320, and you do not need to take the exam.
If you are fluent in Cantonese or other Chinese dialects and/or want to finish the FL requirement in one year, you may sign up for CHIN 0210, and you do not need to take the exam.