I doubt you will be able to get certified with zero experience.
The exam is very tough and assumes you have an understanding of the Tableau Desktop interface and how to visualise data.
Please spend the time to learn how Tableau Desktop (or Server) works before attempting the exams.
Please do some practice in tableau and complete desktop certification.
Zero exp not enough.
Tableau Specialist is easier than Qualified Associate.First you prepare for Tableau Specialist.The Exam duration is 60mins,70% is the Pass%.25 to 30 Questions more on Knowledged based,Hands on is very easy.
Question type are True/False,Multiple choice,
You should concentrate on knowledge based.You read all the topics in Tableauonlinehelp
Time Limit: 60 minutes
Question Format: Multiple choice, multiple response, hands-on
Number of Questions: 30
Scoring: Automatically scored; point value varies per question type with hands-on worth more
Passing Score: 70%
Language(s) Offered: English, Japanese, Simplified Chinese, German, French, Brazilian Portuguese, International Spanish
Delivery Platform: Windows Virtual Machine containing Tableau Desktop
you should have good internet connection,you can attempt the exam at your home.