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By doing a binary AND of the two numbers, we get a network address of 192.168.102 and the remainder is the host address of 100.

This IP configuration can have up to 255 computers installed. The subnet mask and the numbers present in the address can also identify the class of address. For this Unit we do not need to know more about how the address is composed.

What is important is to know that the subnet has to be the same for each computer and the associated groupings have to be the same.

Next: Why DHCP?