Ping
A ping tool is a network diagnostic utility used to test the reachability of a device (such as a computer, server, or router) on a network. It sends a small data packet (ICMP Echo Request) to the target device and waits for a response (ICMP Echo Reply). The tool measures the round-trip time for the packet, helping determine if the target is online and the quality of the connection. Ping is commonly used to troubleshoot network issues, check connectivity, and diagnose latency or packet loss problems.