Heroes of Packet Analysis Quiz 2020 | Profitap
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Using the following passphrase, decode the attached trace file and answer the question:

herosofpacketanalysis

What is the IP Address Lease Time specified by the DHCP server?

Asked by:

Mike Pennacchi

 

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    The correct answer is: A

    See the screenshot of the TCP throughput graph (click on the thumbnail for the full size image).

    Looking at the behavior of this throughput graph, which congestion algorithm is the sender likely using?

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      The correct answer is: D

      Please see the trace file:

      You’re investigating a possibility to improve the performance of the FTP connection. The traffic pattern is going to remain as demonstrated. Which modification can you introduce to achieve this goal?

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        The correct answer is: D

        While investigating an issue with a TCP connection, you plotted a TCP Stream Graph. Suddenly you discovered a strange reappearing pattern with the TCP Window.

        Download both the image and the trace file here:

        Analyze any of such occurrences (for example, frames 16435…16483) and choose the correct answer about the pattern.

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          The correct answer is: D

          A company has a couple of websites. They use a load balancer in front of these websites. After an upgrade of this load balancer, one of the websites (with virtual IP address 192.168.1.100) stopped working.

          To investigate the issue, a packet capture of both the client side traffic as well as the server side traffic was made on the load balancer.

          You can download the packet capture and the TLS session keys here:

          As you can see in the packet capture, the load balancer is closing the connection with TCP/RST packets. What do you think is the root cause of these TCP/RST packets?

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            The correct answer is: B