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This task deals with using TraceMetrics (trace analyzer for ns-3) to easily plot high quality graphs for ns-3 simulations. Follow the steps given below to complete the task:

1. Copy tcp-bulk-send.cc from examples/tcp and paste it in scratch directory.
2. Run tcp-bulk-send.cc with tracing set to true.
3. Verify whether tcp-bulk-send.tr file is generated successfully.
4. Download TraceMetrics from the URL given below.
5. Load tcp-bulk-send.tr in TraceMetrics and go to 'Streams' tab.
6. Select 'TCP ALL' in the left side menu and then click 'Export TCP graphics' at the bottom.
7. After a new window opens, click on 'Make a view' to see the graph. You might have to install gnuplot if clicking 'Make a view' gives an error.
8. If you're able to see the graph successfully, change the 'Output format' on left side to PNG and then auto-generate the graph.
9. Send the PNG image of the graph for evaluation.