Using "Ping -a" will tell the ping tool to resolve an IP Address to a hostname before beginning to ping the IP Address. If a hostname is not resolved, ping will not provide a hostname and instead show the IP address. For example, if a PC has a hostname of SERVER1 and an IP of 192.168.1.101, using Ping -a 192.168.1.101 will produce "Pinging SERVER1 [192.168.1.101] with 32 bytes of data:" at the start of output.
Ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network. It is available for virtually all operating systems that have networking capability, including most embedded network administration software.
Ping measures the round-trip time for messages sent from the originating host to a destination computer that are echoed back to the source. The name comes from active sonar terminology that sends a pulse of sound …