YOU SAID:

Do I know how this works? not at all

INTO JAPANESE

この仕組みはわかりますか？まったくわかりません。

BACK INTO ENGLISH

Do you know how this works? I have no idea.

INTO JAPANESE

どういう仕組みなのか知ってる？分からない

BACK INTO ENGLISH

Do you know how it works?

INTO JAPANESE

その仕組みを知っていますか？

BACK INTO ENGLISH

Do you know how it works?