I do not us subnetting often
where I get confused is where to add the bits when it come to subnetting and supernetting
ex: 192.168.0.0/24 ...if the request says add 20 subnets , then the closest is 2^5, which means you add 5 bits from the left
it will become 192.168.0.0/29 =192.168.0.0 255.255.255.248
I guess supernetting (reducing subnets in order to add more hosts) is not very common
I thought with 10 subnets, you can get 254 hosts by subnet .
Correct ?