Is it common to repeat warranties at all times between signing and closing?
Frequency/market practice: Less common.
Is a bring-down certificate at closing common?
Frequency/market practice: Rarely; bring-down certificates are not very common.
What is the applicable repetition standard, e.g., true in all material respects or Material Adverse Effect?
Frequency/market practice: True and accurate in all material respects is the common standard, but there is often a carve-out for fundamental representations, which must be absolutely true and accurate.