Answer:
Ping
Explanation:
Jack should ping the server and check to see if it has crashed. The ping command is a networking utility that determines if an IP address or domain is accessible. Once it is determined, Jack may utilize the data to derive additional inferences. While troubleshooting internet access, pinging is generally the first line of protection. It not only tests connection, but it also counts time and ensures that all Internet Control Message Protocol packets are accountable.
