What is the purpose of using the Ctrl-Shift-6 key combination after issuing a ping command on a switch?

Using the Ctrl-Shift-6 key combination after issuing a ping command on a switch serves a specific purpose related to command control in Cisco devices. When you execute a ping command, the device sends ICMP echo requests to the target address and waits for replies. If you need to stop this ongoing process before it completes, the Ctrl-Shift-6 combination acts as an interrupt. This is particularly useful in situations where a ping command is taking too long to respond or when you need to quickly return to the command prompt for further actions without waiting for the command to finish.

The other options serve different functions unrelated to the interrupting task at hand. Displaying command history or initiating a network scan is not possible with this combination, and reverting a previous command does not apply in this context. Thus, the primary function of Ctrl-Shift-6 during a ping command is to provide a way to interrupt the process.