ping功能你真的懂吗？

Windows自带的ping功能可以用来测试网络的连通性，但是你真的会用吗？ 用法: ping [-t] [-a] [-n count] [-l size] [-f] [-i TTL] [-v TOS] [-r count] [-s count] [[-j host-list] | [-k host-list]] [-w timeout] [-R]

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