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QUESTION 4 (15 Marks) The traceroute program is commonly used to determine an end-to-end path on the Internet. Consider the example scenario shown in Figure 3, where User X wishes to find the end-to-end path to Server Z. Explain the full working of traceroute in this example. Use appropriate diagrams to show exchange of packets and their contents at each stage. User X Switch A Server 2 Router B Fig. 3: Example scenario for Question 4 (Section B)