试题详情
- 单项选择题Due to limitations affecting voice quality, which of the broadband speeds shown is preferred in order to achieve highest voice quality on a converged data and voice teleworker connection?（）
A、DSL with 128k uplink /128k downlink
B、cable with 256k uplink /256k downlink
C、DSL with 128k uplink /768k downlink
D、cable with 256k uplink /1.4M downlink
- D
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