[Fighter]

старанно, ссылка рабочая

Ping Verifies IP-level connectivity to another TCP/IP computer by sending Internet Control Message Protocol (ICMP) Echo Request messages. The receipt of corresponding Echo Reply messages are displayed, along with round-trip times. Ping is the primary TCP/IP command used to troubleshoot connectivity, reachability, and name resolution. Used without parameters, ping displays help. Syntax ping[-t ] [-a ] [-n Count] [-l Size] [-f ] [-i TTL] [-v TOS] [-r Count] [-s Count] [{-j HostList | -k HostList}] [-w Timeout] [-R ] [-S SrcAddr] [-4] [-6] TargetName Parameters ... -a Specifies that reverse name resolution is performed on the destination IP address. If this is successful, ping displays the corresponding host name. Remarks •You can use ping to test both the computer name and the IP address of the computer. If pinging the IP address is successful, but pinging the computer name is not, you might have a name resolution problem. In this case, ensure that the computer name you are specifying can be resolved through the local Hosts file, by using Domain Name System (DNS) queries, or through NetBIOS name resolution techniques.

Код:

C:\>ping -a 213.180.204.11

Обмен пакетами с yandex.ru [213.180.204.11] с 32 байт данных:

Ответ от 213.180.204.11: число байт=32 время=131мс TTL=88
Ответ от 213.180.204.11: число байт=32 время=125мс TTL=88
Ответ от 213.180.204.11: число байт=32 время=139мс TTL=88
Ответ от 213.180.204.11: число байт=32 время=134мс TTL=88

Статистика Ping для 213.180.204.11:
    Пакетов: отправлено = 4, получено = 4, потеряно = 0
    (0% потерь)
Приблизительное время приема-передачи в мс:
    Минимальное = 125мсек, Максимальное = 139 мсек, Среднее = 132 мсек

>>Дядя Билл, а на нафига это?"
вопрос риторический?