When you're checking for alpha/beta positition, you're looking at (1) the anomeric carbon's -OH group and then (2) the posistion of -CH2OH on the other side of the - O - of the anomeric carbon. If both of these group are on the same side, it's Beta. If they're on opposite sides, it's Alpha.
If you look at fructose side of the ring, you see the -OH group that on the anomeric carbon (the one involved in the bond that has lost its H) is DOWN (1).... now you look at the CH2OH on the other side of the O... (2) it's also pointed DOWN.
So, Beta.