Asynchronous or Synchronous Assessment?

This week we had a presentation obout how to assesst in DE?

It was clear to me because presenters followed the text book and I had read it.During this presentation and after that we talked about synchronous and asynchronous assessment in DE, and which one is more effective in DE assessment.It can be correct that both of them are useful for assessting students depends on instructor's aims but I have different view.In my point of view, an asynchronous assessment is like an assignment because learners have enough time to come up with it, so it is better to call it assignment instead of assessment.Indeed, I think, for assessment it is better to use synchronous for measurment of knowledge and skills in learners.