4.4. Task 4.4: Using Ping Utilities
Nearly every class of IP-compatible device has built in to it a way to test connectivity to the rest of the network with a single command. A vast number of these devices use the ping utility. The term is often capitalized like an acronym and expanded as Packet INternet Groper, but ping's author has dismissed this urban legend. Perhaps the industry has a bit more pent-up creativity than it knows what to do with. Its name is derived from the fact that it works in a similar fashion to a sonar ping in that it sends a packet out and expects one back. The variable delay tends to be proportionate to the distance and the number of devices in between.
One of your established servers has stopped responding ...