Routers - dot1Q encapsulation, VLANs, and ip helper-address

To correctly have the three equally sized /20 subnets, they would need to be: 192.168.0.0/20, 192.168.16.0/20, 192.168.32.0/20 Each would allow 4,096 IP addresses /24 = 255.255.255.0 (aka class C subnet) /20 = 255.255.240.0