【单选题】
A <{p}>NetFlow updates to the collector are sent 50% less frequently<{/p}>
B <{p}>Every second IPv4 packet is forward to the collector for inspection<{/p}>
C <{p}>CPU and memory utilization are reduced when compared with what is required for full<{/p}>
D <{p}>The resolution of sampling data increases, but it requires more performance from the<{br/}>router<{/p}><{p}><{/p}>
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