PING chosun.ac.kr (203.237.99.12) 56(84) bytes of data.
64 bytes from cms.chosun.ac.kr (203.237.99.12): icmp_seq=1 ttl=54 time=277 ms
64 bytes from cms.chosun.ac.kr (203.237.99.12): icmp_seq=2 ttl=54 time=282 ms
64 bytes from cms.chosun.ac.kr (203.237.99.12): icmp_seq=3 ttl=54 time=276 ms

--- chosun.ac.kr ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 276.975/279.126/282.727/2.633 ms