多项选择题

A. CBWFQB. LLQC. traffic shapingD. WREDInterfacecongest……

Interface congestion is causing drops in voice packets and TCP packets. The drops result in jerky speech quality and slower FTP traffic flows. Which two technologies would proactively address the TCP transfer rate and the voice problems？（）

A. CBWFQ
B. LLQ
C. traffic shaping
D. WRED

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