Before writing about Ping sweep, i would like to introduce Ping. Ping is a network based utility which is used to know if a host is alive or dead on the network. Suppose i want to check for wikileaks.com
if we get the response it means website is live. You can check for a system by its IP address or a website by its domain name. We can use this program to detect host like website, computer system, printer, network or any device.