How many months of qualifications does it take to take the D-level track examination and the C-level track examination?

6 months.

To transfer from the old track D to the old track C2 requires at least 6 months of experience. According to national regulations, one of two conditions needs to be met to take the C-II track examination, that is, start working after graduating from a bachelor's degree and have certain work experience, or first obtain the D vocational qualification and have certain practical experience. Therefore, if you want to obtain the Category D professional qualification and have some practical experience, this process will take at least 6 months.

To be promoted from Category D captain to Category 2 captain, the academic qualification restriction has been removed. Promotion to Category D captain requires 3 theoretical examinations.