解题步骤
解题步骤
① 16/17/18/19 四块连续
② 4 = 2^2 → 汇总 /22
③ 对齐：16 mod 4 = 0 ✓
④ 汇总 192.168.16.0/22（覆盖 16.0–19.255）验算
验算
ipcalc 192.168.16.0/22 | grep -E 'Network|HostMax|Broadcast'
# Network: 192.168.16.0/22
# HostMax: 192.168.19.254
# Broadcast: 192.168.19.255