Echo Request

An Echo Request is a network tool used to check if a computer or device is reachable over a network. It sends a packet of data to the target device and expects a reply, known as an Echo Reply. This process is commonly seen in tools like "ping," which helps diagnose connectivity issues. If the target responds, it indicates that the device is online and responding; if not, it may be down or unreachable. Essentially, it's a way to test communication between devices in a network.