Since they are all level two, the difficulty is similar. Grammatically speaking, VB.net and VB are almost the same and easy to learn. However,. NET is, after all, an object-oriented language, and there may be some contents in the exam. In addition, in terms of database access, VB6 uses ADO objects, while. Net uses ado.net, which is quite different, but it doesn't matter to beginners.

If you just want to take the exam, then VB6 is enough, and it may be easier. If you are interested in programming, let's go to VB.NET. VB6 can't be said to have been eliminated, but it is already non-mainstream.