From option chain data we can see
Almost ~65 lakhs contrancts were sold in put side as on 27/12/2021 between 34500-35000
So this range is a great support and market will not break this so easily.
Whereas,
If we see at call side between 35000-35500 almost ~60 lakhs contrancts were sold so this range will be the resistance level for this last exipry of banknifty and market will be bullish if it gives closing above 35500 as i refered in my banknifty analysis post then market will be positive in new year.