1, National Open University failed in offline and online exams, with different majors and different reference forms. At present, most majors need to go to offline test sites for reference, and very few majors can refer to it purely online (in face recognition of home mobile phones).

If you take the online exam, it's not a home exam. The full name of online examination is the national unified examination of basic courses of online distance education. You go to the pre-arranged test center to take the exam, just like the self-study exam and the college entrance examination, except that every subject of the online exam is a computer exam.