這次的作業有兩部分 第一部分是手寫作業 範圍是課本第一章的 2 5 6 10 23(a)(b) 一共五題 第二部分是 WireShark 投影片明天會announce 先將題目搶先爆一下 1.(10%) Download and install the Wireshark software: Go to http://www.wireshark.org/download.html and download and install the Wireshark binary for your computer. While Wireshark is running, enter a website and have that page displayed in your browser. The Ethernet frames containing these HTTP messages will be captured by Wireshark. After your browser has displayed the page, stop Wireshark packet capture by selecting stop in the Wireshark capture window. 2.(10%) How long did it take from when the HTTP GET message was sent until the HTTP OK reply was received? (By default, the value of the Time column in the packetlisting window is the amount of time, in seconds, since Wireshark tracing began. To display the Time field in time-of-day format, select the Wireshark View pull down menu, then select Time Display Format, then select Time-of-day.) 3.(10%)How many HTTP GET request messages were sent by your browser? To which Internet addresses were these GET requests sent? 4.(10%)Can you tell whether your browser downloaded the two images serially, or whether they were downloaded from the two web sites in parallel? Explain. 5.(10%)How many packets were sent from your local machine and how many from the remote machine? 手寫作業 是下星期三(3/30)上課前助教會去收 WireShark是在下下星期三之前(4/6)十二點前 以電子檔繳交到 [email protected] 明天助教課堂上會再去講一次作業 大家記得要準時交 遲交一天扣十分 請大家要記得 感謝 助教 王裕博 --

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