What two descriptions best define DWDM？ （）
- A、 a WDM system that is compatible with EDFA technology
- B、 an optical technology for transmitting up to 16 channels over multiple fiber strands
- C、 an optical technology for transmitting up to 32 channels over multiple fiber strands
- D、 a technology for transmitting multiple optical signals using less sophisticated transceiver designthen CWDM
- E、 a technology for transmitting more closely packed optical signals using more sophisticatedtransceiver designs than CWDM
正确答案:A,E
答案解析:有
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