PING nghean.edu.vn (117.5.229.196) 56(84) bytes of data.
64 bytes from localhost (117.5.229.196): icmp_seq=1 ttl=247 time=217 ms
64 bytes from localhost (117.5.229.196): icmp_seq=2 ttl=247 time=215 ms
64 bytes from localhost (117.5.229.196): icmp_seq=3 ttl=247 time=215 ms

--- nghean.edu.vn ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2000ms
rtt min/avg/max/mdev = 215.535/216.210/217.453/0.958 ms