There is an exemption policy for degrees. Only undergraduate computer majors can be exempted from the exam. This policy is basically universal in the whole country.
Graduate student exemption policy
There are also some areas that admit that graduate students are exempt from exams.
Double degrees do not enjoy the exemption policy.
But it has never been mentioned that double degrees can be exempted from exams. Double-degree students enjoy postgraduate treatment at school, but generally speaking, they are not equal at work.
The exam is not difficult.
In fact, this exam is not difficult. As long as you practice the question bank well, passing the exam is not a problem.
Zhengfeng software
You can search Baidu for "competitive software" or "competitive professional examination" to download a set of software to learn. You can also consult online if you don't understand.