Which two multicast address ranges are assigned as source-specific multicast destination addresses andare reserved for use by source-specific applications and protocols？ （）
- A、232.0.0.0/8
- B、239.0.0.0/8
- C、232.0.0.0/4
- D、FF3x：：/32
- E、FF2x：：/32
- F、FF3x：：/16
正确答案:A,D
答案解析:有
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