Nifty has a strong resistance zone of 11950 – 12000. Only a move above this zone will make the bulls comfortable. On the other hand, 11850 – 11800 is a strong support zone.Bank Nifty, strong support now exists at 30900. On the other hand, 31200 is a strong resistance. A move above this level will trigger the next big move to test 31500 – 31600.