Which two statements about internal detectors in the Cisco Firepower System are true? (Choose two)
A. They are built in to the Firepower system and delivered automatically with firepower updates.
B. They can be activated manually or configured to active automatically under specific conditions
C. They can be modified for use ac custom detectors
D. They can detect client and application traffic
E. They can detect only web-based application activity in FTTP traffic
F. They can be deactivated or by VDB updates
A D
Internal detectors are a special category of detectors for client, web application, and application protocol traffic. Internal detectors are delivered with system updates and are always on.
https://www.cisco.com/c/en/us/td/docs/security/firepower/60/configuration/guide/fpmc-config-guide-v60/Application_Detection.html