What could cause all the S-TAPs on a particular collector to turn red (in S-TAP Control)?
A. The GUI is down (port 8443 unavailable).
B. The SSH daemon on appliance is down (port 22 unavailable).
C. The GIM server on the appliance is down (port 8081 unavailable).
D. The inspection core was stopped (ports 9500 and 16016 unavailable).