At what age, you still believe in employment security. CDA does cooperate with many enterprises and institutions, which only shows that CDA certification is very recognized in these cooperative units. CDA's related course counseling is mainly aimed at preparing for the exam for friends with weak data foundation. Doesn't mean you can get a certificate or find a job by signing up for their courses. That's a lie, but I can mention one thing to you, that is, CDA can train instructors as long as you have connections.