What is the best free online autocad certification?

I agree with M. muhammad iqbal . As I know, Valid certifications must be payed

M I T SEARCH AND GET WHAT DO YOU  WANT.

any online certificate is good ..

i think the best online courses and certifications you can get from MIT , search the online courses and apply for it and pass the exam and get certificate from this university, you can find the courses also at coursera.com, or saylor.com

I am sorry I dont know something like this

I apologized for the answer I do not know the answer Leave for professionals