#lab

这个任务的目的是让你更加熟悉进程控制和信号传递的概念。你将通过编写一个简单的Unix shell程序来实现作业控制。

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In this lab, we’ll explore several aspects of the ICMP protocol:
在本实验中,我们将探讨 ICMP 协议的几个方面:

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  • Select the first ICMP Echo Request message sent by your computer, and expand the Internet Protocol part of the packet in the packet details window.(选择您的计算机发送的第一个 ICMP Echo Request 消息,并在数据包详细信息窗口中展开数据包的 Internet 协议部分)
    不知道为什么, 我的电脑只能收到Time to live exceeded报文段.

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