How can I subnet this ip address?
Subnet A 2 hosts
Subnet B 80 hosts
I think my solution not correct!
I appricate your help

    N ID             Subnetmask          First available              Last available                 Broadcast PC B       PC A        

So you want to divide up into two subnets, one a /30, and one a . . . well, here we have a problem. There's no convenient way to have a single subnet that has just 80 hosts. But you could have one that has 126 hosts if you used a /25.

So here's what I recommend, assuming you don't need Subnet A to be first in the IP pool:

Subnet B: (mask, –
Subnet A: (mask, –