Generally, all courses are handed in in two years, but getting the certificate depends on when the exam is finished. So, just to provide you with a learning environment, you still have to rely on yourself.
My major is international trade, and the examiner is Zhejiang University. The degree requirements are as follows: 1. The average score of each subject (excluding graduation thesis) reached 70 points; 2. The graduation thesis score reached 75 points; 3. Pass CET 3.
There must be subtle differences, but since I haven't applied yet, I don't know what the specific differences are. You can't expect the degree certificate obtained from the self-study exam to be exactly the same as that obtained by the real fresh graduates of Zhejiang University, can you?