Practice Adding New VLSM Subnets
Your boss wants you to add a subnet to an existing design. The existing design already has these five subnets:
172.16.0.0/20
172.16.20.0/22
172.16.32.0/21
172.16.18.240/30
172.16.18.0/28
The boss cannot decide among five competing subnet masks. However, the boss wants you to practice VLSM and plan the subnet ID he would use for each of those five possible masks. He tells you that the new subnet ID must be part of Class B network 172.16.0.0, that the new subnet must not overlap with the original five subnets, and that the new subnet ID must be the numerically lowest possible subnet ID (without breaking the other rules). Pick the one subnet ID you would plan to use based on each of the following mask choices by ...
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