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A systems administrator momentarily loses track of which is the test environment firewall and which is the production firewall. The administrator makes changes to the candidate configuration of the production firewall, but does not commit the changes. In addition, the configuration was not saved prior to making the changes. Which action will allow the administrator to undo the changes?
Correct Answer: D
Reverting to the running configuration will undo the changes made to the candidate configuration since the last commit. This operation will replace the settings in the current candidate configuration with the settings from the running configuration. The firewall provides the option to revert all the changes or only specific changes by administrator or location1. References: Revert Firewall Configuration Changes, How to Revert to a Previous Configuration, How to revert uncommitted changes on the firewall?.