Currently, the prompt on the AOS-CX switch displays: Core-1(config)# interface 1/1/5. Which command will immediately return the prompt to Privileged mode?

To return to Privileged mode from the interface configuration mode, the appropriate command is pressing ctrl+z. This command, often referred to as "exit to the exec mode," allows users to quickly navigate back to the higher privilege mode.

In many network device operating systems, including AOS-CX, using ctrl+z effectively exits the current mode and takes you back to the previous prompt level. In this scenario, since the user is currently in the interface configuration mode (indicated by the prompt showing the interface), using ctrl+z will yield the expected result of a return to Privileged mode.

While other options may seem feasible, they do not serve the intended purpose of exiting the interface configuration mode directly. For instance, the commands exit and quit are generally used to leave active sessions or terminate connections, and pressing Ctrl+w is typically a shortcut for deleting a word on the line rather than a mode transition command. Therefore, using ctrl+z is the most efficient and appropriate action for returning to Privileged mode.