Implementation of Stop & Wait ARQ Flow control Protocol.

For Stop-and-Wait ARQ, for 10 data packets sent, _______ acknowledgments are needed.
What is the main disadvantage of stop-and-wait flow control?
The frames in Stop-And-Wait ARQ are re-transmitted when :-
The term that refers to the set of procedures used to restrict the amount of data that the sender can send before waiting for the acknowledgement is:
A receiver using stop-and-wait ARQ sends ACK framed numbered __________.