题目内容

Which two statements are true about the protocols that are used for transmitting voice traffic?()

A. RTP multiplexing is used to keep multiple phone conversations separate
B. RTP provides end-to-end delivery services for voice traffic.
C. UDP is used to ensure a reliable transmission from sender to receiver.
D. RTP is used to provide resource reservation for the voice stream.
E. UDP provides multiplexing of multiple phone conversations.

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