He most likely looked for a dead port on the hub and plugged his laptop in with a packet sniffer installed on it, which promiscuously picks up traffic on a network segment.
他很有可能寻找集线器上的一个死端口，然后插上安装了包嗅探器的笔记本电脑，该嗅探器可以不加选择地拾取网段上的通信量。
When a TCP segment is received, the TCP router knows which port to pass it to by looking at the port number in the TCP header.
当接收到一个tcp段时，tcp路由器通过查看tcp报头中的端口号就知道向哪个端口传送包。
The A/D decoding circuit received simulation signal form measurement port and converted the signals into data signals which displayed by 7-segment, then signals were sent to data latch.
译码电路接收测量端模拟信号，转化为7段显示的数字信号，发送到数据锁存器上。
The A/D decoding circuit received simulation signal form measurement port and converted the signals into data signals which displayed by 7-segment, then signals were sent to data latch.
译码电路接收测量端模拟信号，转化为7段显示的数字信号，发送到数据锁存器上。
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