Derivatives FRA related question all, reference, question, contract

brk1yn

When doing FRA related questions I realized that:
all cash settlement are done at contract expiration date and
at the start of floating reference rate (i.e. LIBOR)
Is this a norm for FRA related questions, that is, the settements are always done at the end of the contract expiration AND at the start of floating rate reference?
If the question is not straight forward let me know and I will provide relevant examples.
Thanks.