In the given network of capacitors, the equivalent capacitance between points Aand B is :

two point aew shorted through a conductor this mean that no current should be flowing through the capacitor to the right side of point A &2 as they offer  greater impendence path. therefore the net capacitence  b/w A & B is the branch with the two parallel capacitor , right beneath point A &B . Net capacitence =C +C=2c[b/w A & B]