Which Cisco Firepower intrusion Event Impact level indicates the host on the monitored network is vulnerable to the attack, and requires the most immediate urgent response to be taken?
A. Impact Level 3
B. Impact Level 4
C. Impact Level 2
D. Impact Level 0
E. Impact Level 1
should be E
0 = Unknown
1 = Vulnerable
correct answer should be E (Impact Level 1)
https://www.cisco.com/c/en/us/td/docs/security/firepower/601/configuration/guide/fpmc-config-guide-v601/Working_with_Intrusion_Events.pdf
see page 12, table 2