What are the three potential use cases of NetFlow in an actual network deployment? (Choose three.)
A. identifying the traffic source and destination for optimizing peering and transit links
B. providing the network telemetry for identifying and mitigating DDoS attacks
C. providing traffic traces that are comparable to what is provided by a packet sniffer and RMON
D. providing a means for traffic accounting and billing for customers
E. providing deep application inspections and controls
