Which two IPS appliance configuration options are used in conjunction with the attack relevance rating feature? (Choose two.)

A.
OS mappings

B.
OS risk category levels

C.
passive OS fingerprinting

D.
OS target value rating

E.
OS event action filter

F.
OS event action override

Explanation:
http://www.cisco.com/en/US/prod/collateral/vpndevc/ps5729/ps5713/ps4077/prod_white_paper0 900aecd80191021.html