Which of the following IP hosts would be valid for PC users, assuming that a /27 network mask was used for all of the networks?（）
- A、15.234.118.63
- B、83.121.178.93
- C、134.178.18.56
- D、192.168.19.37
- E、201.45.116.159
- F、217.63.12.192
正确答案:B,C,D
答案解析:有
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