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

Which statement about Cisco ASA NetFlow v9 (NSEL) is true?
A . NSEL events match all traffic classes in parallel
B . NSEL is has a time interval locked at 20 seconds and is not user configurable
C . NSEL tracks flow-create, flow-teardown, and flow-denied events and generates appropriate NSEL datarecords
D . You cannot disable syslog messages that have become redundant because of NSEL
E . NSEL tracks the flow continuously and provides updates every 10 second
F . NSEL provides stateless IP flow tracking that exports all record od a specific flow

View Answer

Answer: C

Explanation:

http://www.cisco.com/c/en/us/td/docs/security/asa/asa82/configuration/guide/config/monitor_nsel.h tml