如何通过计算机运行 CMD 测试网络通不通？

首先，通过在运行里面输入cmd打开命令提示符窗口。
然後依次使用ping 命令：
1、ping 127.0.0.1 -----测试主机硬件
2、ping 本机IP--------测试本机IP
3、ping 默认网关--------测试与网关的连通
4、ping 外网地址或者IP----测试与外网是否连通
cmd看网络通不通，按如下步骤进行就好了，
1、点击屏幕左下角的“开始-运行”，在弹出的对话框中输入”cmd“，然后点确定，会弹出dos命令窗口
2、在dos命令窗口中输入：ping 192.168.0.1敲回车
3、如果如下显示则证明是通的：
Pinging 10.139.10.1 with 32 bytes of data:
Reply from 10.139.10.1: bytes=32 time<1ms TTL=255
Reply from 10.139.10.1: bytes=32 time=2ms TTL=255
Reply from 10.139.10.1: bytes=32 time=1ms TTL=255
Reply from 10.139.10.1: bytes=32 time=1ms TTL=255
Ping statistics for 10.139.10.1:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 2ms, Average = 1ms
如下显示是不通的：
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Ping statistics for 10.139.10.2:
Packets: Sent = 4, Received = 0, Lost = 4 (100% loss),
