QID: AN437 and AN491

[slawekstec]

172.16.2.128=>255.255.255.128  = block of 128 IP's (126+2)
172.16.3.64  =>255.255.255.224 = block of 32 IP's (30+2)
172.16.3.128=>255.255.255.240  = block of 16 IP's (14+2)
172.16.3.192=>255.255.255.248  = block of 8 IP's (6+2)
172.16.4.0  =>255.255.254.0       = block of 512 IP's (510+2)

+2 in each block represent ==> NetworkID and BroadcastID

I do not see a copy of the question but I assume that you
have to assign a block of IP's to fulfil specific request.

Google search: IP CALCULATOR    that will provide additional info about each block/subnet