单选题Why is QoS important in a converged network?（）ABecause data does not need to arrive intact, so data transfer rates can be variableBBecause lost voice-data packets must be retransmittedCBecause voice data packets should arrive quickly and sequentially, and with no lost dataDBecause voice data packets must follow a single dedicated path through the network
单选题
Why is QoS important in a converged network?（）
A
Because data does not need to arrive intact, so data transfer rates can be variable
B
Because lost voice-data packets must be retransmitted
C
Because voice data packets should arrive quickly and sequentially, and with no lost data
D
Because voice data packets must follow a single dedicated path through the network
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