The command-line (Command Prompt) on most operating systems enables network administrators to troubleshoot connectivity problems. When TCP/IP is installed there are a number of TCP/IP utilities (sometimes called tools) available, including those that use ICMP for testing and troubleshooting. Summarize the use of two ICMP command-line utilities (ex: ping, trace route). Include a summary of what your system displayed when you used each of these utilities and the reason you would select these utilities for troubleshooting.