Which sensor mode can deny attackers inline?

Which sensor mode can deny attackers inline?
A . IPS
B . fail-close
C . IDS
D . fail-open

Answer: A

Explanation:

Deny attacker inline: This action denies packets from the source IP address of the attacker for a configurable duration of time, after which the deny action can be dynamically removed. Available only if the sensor is configured as an IPS.

Source: Cisco Official Certification Guide, Table 17-4 Possible Sensor Responses to Detected Attacks , p.465