This is a concept of information sharing. Of course it is positive both for the individual and for the community. This generates as an amplifier of knowledge and ideas. in fact, that's what's happening on ResearchGate!

Thank you Dear Professor Jean-Yves Boulay

In my opinion both are important for personal development not only in computer , electron devises although in paper , copybook .

Such as IELTS or any language exam has such knd examination separately!

For my own experience many times I passed all parts of IELTS not only reading , writing, listening and speaking