Which of the following technologies was designed to provide the FASTEST data rates over analog phone lines?（）
- A、RADSL
- B、SONET
- C、ADSL
- D、MPLS
正确答案:C
答案解析:有
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CompTIA认证考试
CompTIA认证考试
Which of the following technologies was designed to provide the FASTEST data rates over analog phone lines?（）
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