How to distinguish network quality?
In windows interface, click menu “Start” > “Run” > input “command” > click “Enter” to go to MSDOS. In MSDOS window: Input: ping XXXXXX(IP address or DNS) The window will show: Reply from XXXXXXXX: bytes=32 time=XXXms TTL=XXX Reply from XXXXXXXX: bytes=32 time=XXXms TTL=XXX Reply from XXXXXXXX: bytes=32 time=XXXms TTL=XXX Request timed out.