Later I tried to hunt around Germany for the possibility to pass a DSH examination. This is a type of German language exams, which enables non-native german speakers to study in a German educational institution.
I contacted some examination center capable doing DSH (not surprisingly, these are all German universities), but I've got always the answer: I can try a DSH exam by them only if I have an active application to their institution. It seems as if it were only possible as part of an application process, but I nowhere found this explicitly.
And my goal weren't to apply into a German University (although in the future I didn't closed this out). My goal were with that to make my CV looking better.
Yes, I've got the tip to pass some equivalent German exam (f.e. TestDAF or the Sprachdiploms of the Goethe Institut), and probably this is which I will do if there is no other possibility, but currently my best wish were a passed DSH, because this is what I consider the best-looking in a German CV ("Lebenslauf").
Thus my question is: is it possible to try an "independent" DSH Examination (without an active application to German educational institution), or not?