You can reply:
This is a very tricky question, but you can say:
- It's not recommended to update the configuration from the OSGI config manager console but if you will, let's proceed.
- When you update the configuration from /system/console, then the services in the bundle should restart, upon on saving.
- When the configuration from /system/console is saved from the UI, then changes should show up from /apps/system
- when /apps/system persist, it will override anything from /apps/my-app
- when your services are not picking up configuration from your custom configuration from /system/console , then you might want to restart the server, ideally you would want to take a look at the logs too, to see if services are being restarted.
- if nothing reflects, then you can restart the AEM server, assuming that the services are working as expected on lower environments such as local, develop & staging.
I think the interviewer wants you to be abstract and think of all possible ways for debugging and solving the problem. I interview people month on, and I think this would be an answer that I would accept as an interviewer.