An engineer is troubleshooting Precision Time Protocol on Cisco ASR 9000 router and noticed the protocol is running in a Multicast mode.
Which two results regarding the messages can the engineer expect? (Choose two)
A . All messages for PTP will be sent as multicast messages
B . PTP messages that use unicast messages and those that use multicast messages must be specified
C . Announce and Sync messages are sent as multicast messages
D . Signaling, Delay-Request, and Delay-Response messages are sent as unicast messages
E . Signaling, Delay-Request, and Delay-Response messages are sent as multicast messages
Answer: C, D