When identifying Cisco TelePresence Endpoint traffic characteristics, which three statements are true? (Choose three.)

When identifying Cisco TelePresence Endpoint traffic characteristics, which three statements are true? (Choose three.)
A .  Latency, jitter, and loss are measured in a round-trip fashion.
B .  Latency, jitter, and loss are measured unidirectionally.
C .  Latency and loss are measured at a packet level, based on RTP header sequence numbers and time stamps.
D .  Latency and jitter are measured at a packet level, based on RTP header sequence numbers and time stamps.
E .  Jitter is measured at a video frame level, by measuring the arrival time of the video frame versus the expected arrival time.
F .  Jitter is measured at a packet level, by measuring the arrival time of the packet versus the expected arrival time.

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Answer: B,C,E