Not easy to test. Network education generally refers to modern distance education. Postgraduates in online education are unfamiliar with the examination process and are afraid of the unknown, so they are prone to make mistakes. Postgraduates in online education are more difficult to test. Modern distance education is a new form of education with the development of modern information technology, and it is the main means to build people's lifelong learning system in the era of knowledge economy. It uses modern distance education means and various media to contact teachers and students and carry the course content.