Which statement about the configuration of the Cisco ASA NetFlow v9 (NSEL) is true ?

Which statement about the configuration of the Cisco ASA NetFlow v9 (NSEL) is true ?
A . To view bandwidth usage for the NetFlow record, you must enable QoS features
B . Use sysopt command to enable NSEL on a specific interface
C . NSEL can be used without a collector configured
D . NSEL tracks the flow continuously and provides updates every 10 seconds
E . You must define a flow-export event type under a policy

View Answer

Answer: E

Explanation:

http://www.cisco.com/c/en/us/td/docs/security/asa/asa84/configuration/guide/asa_84_cli_config/ monitor_nsel.html