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Which two statements best describe the difference between active mode monitoring and passive mode monitoring? (Choose two.)
Correct Answer: C,D
Explanation/Reference: Explanation: Passive monitoring is the act of OER gathering information on user packets assembled into flows by NetFlow. OER, when enabled, automatically enables NetFlow on the managed interfaces on the border routers. By aggregating this information on the border routers and periodically reporting the collected data to the master controller, the network prefixes and applications in use can automatically be learned. Additionally, attributes like throughput, reachability, loading, packet loss, and latency can be deduced from the collected flows. Active monitoring is the act of generating IP SLA probes to generate test traffic for the purpose of obtaining information regarding the characteristics of the WAN links. Active probes can either be implicitly generated by OER when passive monitoring has identified destination hosts, or explicitly configured by the network manager in the OER configuration. Reference: http://products.mcisco.com/en/US/docs/solutions/Enterprise/WAN_and_MAN/Transport_diversity/ Transport_Diversity_PfR.html#wp199209