题目内容
如果在一台主机的Windows环境下执行命令Ping www.pku.edu.cn得到下列信息Pinging www.pku.edu.cn [162.105.131.113] with 32 bytes of data:Request timed out.Request timed out.Request timed out.Request timed out.Ping statistics for 162.105.131.113:Packets: Sent=4, Received=0, Lost=4 (100% loss)那么下列结论中可以确定的是( )
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