often get stuck when it comes to a subnet mask that has more subnets than the default subnets for an IP CLass.
I found some examples with solutions but still confusing:
example : 10.16.3.65/23 it says that This is class A address and it also says that host 10.16.3.65 is in the 2.0 subnet, the broadcast address for the 2.0 is 3.255, the valid host adresses are 2.1 through 3.254.
I still can't understand when it come to x.x as in 2.0 or 3.254.
Can someone explain to me clearly how does this work?