Example B — Requirement-based design Requirement: multiple VLANs with host counts: VLAN A 100 hosts, VLAN B 50 hosts, VLAN C 10 hosts, VLAN D 2 hosts; choose network 10.0.0.0/24 as a starting pool.
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You aren't just checking answers; you are debugging your methodology.
Subnetting is all about pattern recognition. Once you memorize the block sizes (128, 64, 32, 16, etc.), you will stop needing to do binary conversions in your head and start seeing the answers instantly.