3、y from 172.168.200.2 bytes=32 time<10ms Ping statistics for 172.168.200.2 Packets Sent=4 Received=4 Lost=0 0% loss Approximate round trip times in milli-seconds Minimum=0ms Maxiumu=1ms Average=0ms 说明网卡设备TCP/IP协议已正确安装。如果在MS-DOS方式下执行此命令显示内容为:Request time