5. What defenses are possible against various types of DoS/DDoS attacks that we have learned. You may answer this question from aspects including but not limited to the detection, prevention, source tracing, and recovery, etc. (10 points) 5. What defenses are possible against various types of DoS/DDoS attacks that we have learned. You may answer this question from aspects including but not limited to the detection, prevention, source tracing, and recovery, etc. (10 points)