单选题To ensure voice packets are kept within the Committed Information Rate (CIR) of a Frame Relay link, what should be used in the CPE?（）AprioritizationBclassificationCfragmentationDtraffic shaping
单选题
To ensure voice packets are kept within the Committed Information Rate (CIR) of a Frame Relay link, what should be used in the CPE?（）
A
prioritization
B
classification
C
fragmentation
D
traffic shaping
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