When a Cisco Secure Intrustion Detection System Sensor communicates with a Cisco Secure Instrustion Detection System Director, what statement is FALSE?

A.
If the preferred route is down, up to 255 alternate listed routes can be attempted

B.
When the sensor to director is detected as “down”, packets lost during this time are buffered and retransmitted. The packets are dropped only when the buffer is full.

C.
The communication occurs via the postofficed system

D.
When no keepalives are detected, eventd on the sensor e-mails the administrator.