PING - Packet InterNet Groper
Packet Internet Groper is a computer program that is used to test the network connectivity between two systems. These systems can be a normal Personal computer, a Large Server, Router, switch or a gateway. It was created to verify whether a specific computer on a network exists on not.
How does PING works
A series of packets are sent form one system to another over a network to test its connectivity, in order to generate a response from the other system. The other system reply with an acknowledgment. This will tell the sender that theses two systems are connected with each other, through an existing network
A single PING can measure the connectivity based on multiple parameters including minimum, maximum, and the mean round-trip time.