Final answer:
The student needs to load a trace file into Wireshark, find the first ICMP Echo Request message, and then view the Internet Protocol part to identify their computer's IP address listed under the 'Source' field.
Step-by-step explanation:
The subject of this question involves the use of Wireshark, which is a network protocol analyzer for Unix and Windows.
In this case, the student is asked to load a trace file into Wireshark, identify the first ICMP Echo Request message sent by their computer, and look within the Internet Protocol part to find their own computer's IP address. To identify the IP address, the student would expand the IP details in the packet details window of Wireshark and look for the 'Source' field, which will display the IP address of the computer that initiated the Echo Request.