A) managing wine cellars, restaurants or shops
B) Introduce wine and other drinks to customers.
C) Promote the exchange and dissemination of wine culture through wine tasting, conferences and wine tourism.
The training time of the course is about 300 hours, half of which will be held in France.
Apply what you have learned, practice instead of learning, and the teachers are all sommeliers. I believe it will help you to pass the exam.