Scenario: A Citrix Administrator has made changes to the Citrix ADC, deleting parts of the configuration, and then saved the new configurations. The changes caused an outage which needs to be resolved as quickly as possible. There is no Citrix ADC backup.
What does the administrator need to do to recover the configuration quickly?
When configurations are deleted and saved, causing an outage, the quickest way to recover without a backup is to restore from the revision history. Citrix ADC maintains a history of past configurations, allowing administrators to revert to a previously stable version of the configuration.
This is from the 1yo-240 ADC exam
I believe the correct answer is D Issuing the command Save v/s Running configuration would return your running configuration to the state of your saved configuration (an "UNDO" if you will).
It says the config is saved. So that command will show no difference
Citrix ADC maintains a history of past configurations. If the administrator has inadvertently saved a bad configuration, they can access the revision history and restore a previous version of the configuration that is known to be functional.