Final answer:
The Windows key sequence for typing the end-of-file indicator in a Command Prompt window is Ctrl + Z.
Step-by-step explanation:
The Windows key sequence for typing the end-of-file indicator in a Command Prompt window is Ctrl + Z. To signal the end of file, you press these keys when you're inputting data directly from the keyboard into a command that's awaiting standard input. It's important to note that the end-of-file indicator may behave differently depending on the context and the specific command you are running in the Prompt.