A. probe request/response， authentication request/response， association request/response
B. association request/response， authentication request/response， probe request/response
C. probe request/response， association request/response， authentication request/response
D. association request/response， probe request/response， authentication request/response

A. Voice traffic data flow involves large volumes of large packets.
B. Because a packet loss involves a small amount of data， voice traffic is less affected by packet losses than traditional data traffic is.
C. Voice carrier stream utilizes Real-Time Transport Protocol （RTP） to carry the audio/media portion of VoIP communication.
D. Voice packets are very sensitive to delay and jitter.
E. Voice packets are encapsulated in TCP segments to allow for proper sequencing during delivery.