When you perform a ping test, ICMP packets are sent to the specified address. Ping is often confused with latency. Ping stands for a signal sent to and from another computer over a network. The measurement of this round trip is the latency. If this round trip works, you will receive a measured value as an answer, which at the same time confirms the accessibility of the addressed computer. If the ping test does not work, the addressed computer is either not accessible or other factors (e.g. firewall) have prevented the request (PING, ICMP).