Which statement describes an operational characteristic of NetFlow?
- NetFlow collects basic information about the packet flow, not the flow data itself.
- NetFlow captures the entire contents of a packet.
- NetFlow flow records can be viewed by the tcpdump tool.
- NetFlow can provide services for user access control.
Explanation: NetFlow does not capture the entire contents of a packet. Instead, NetFlow collects metadata, or data about the flow, not the flow data itself. NetFlow information can be viewed with tools such as nfdump and FlowViewer.
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