Ping is a simple networking diagnostics tool, available on almost all operating systems. It operates at the IP level and sends an Internet Control Message Protocol (ICMP) echo message to the host specified.
Not all machines will respond to pings, or requests may be blocked by firewalls. However, it's good netiquette to allow servers to respond for debugging purposes, and most will oblige. For example, open a Command Prompt or terminal, and type the following:
ping ec2.eu-central-1.amazonaws.com
This will ping an Amazon Web Services (AWS) data center in Germany. In the response, you will see the time in milliseconds. From the UK, this round-trip time (RTT) may be something like 33ms, but your results will vary.
On Windows, by default, ...
