An administrator is responding to an alert declaring that a host on the WAN is no longer responding to requests. The administrator notices that some of the other hosts in the area are also…

An administrator is responding to an alert declaring that a host on the WAN is no longer responding to requests. The administrator notices that some of the other hosts in the area are also unreachable. Which of the following tools will provide the MOST information to the administrator when troubleshooting the problem?