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PING命令使用了哪种ICMP？正确的选项是？（）。
- A、Redirect；
- B、Source quench；
- C、Echoreply；
- D、Destination unreachable
参考答案
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单选题PING命令使用了哪种ICMP？正确的选项是？（）。A
Redirect；B
Source quench；C
Echoreply；D
Destination unreachable
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