CALCULATE SUBNETTING Step 1 IP Address: 192.168.4.0/24 Default subnet mask: 255.255.255.0 Custom subnet mask: 255.255.255.224 Subnet 1 2 4 8 16 32 64 128 256 Host 256 128 64 32 16 8 4 2 1 Subnet Mask /24 /25 /26 /27 /28 /29 /30 /31 /32 Step 2 First, we must locate the bits that have been borrowed. Because our subnet mask is 24, we utilise formula 2 s – 2 and approximate it to 24. The 'S' represents the bits that have been borrowed. We apply the same method for the number of subnets, but without the approximation to 24. We apply the formula 2 H – 2 for the host address. Number of bits borrowed = 2 s – 2 = 24 ...