ilovequestions wrote:Thank you all for your kind help.
If we write "Understood?" in full, which of the following is more appropriate?
A. Is that understood?
B. Have you understood that?
It's hard to say definitively, ILQ, because the delivery, the intonation, would make a difference in the intended meaning. While one collocation will tend towards strident, it doesn't mean that it will be so in all situations.