We might need to use this utility to probe network failure.

我们或许得用本应用程序查询网络故障。

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You can force stdin to read from a text file, a device (say, a probe connected to the computer), or a network connection.

您可强制stdin从文本文件、设备(比如连接到计算机的探头)或网络连接中进行读取。

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If the probe is turned on, you will notice 3 sets of network traffic. The following is an example.

如果探测器打开，您将注意到3组网络流量。

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