A systems engineer is preparing to upgrade the operating system across multiple network security firewalls. Which of the following administrative tasks must be completed prior to applying the update to maintain change governance and ensure rapid system recovery? (Select TWO.)
- Export a full backup of the current operating system image and configuration files to a remote repository.Answer
- Obtain explicit authorization through the change advisory board and document baseline performance metrics.Answer
- CExecute a differential system restoration to clear temporary operational state files prior to flashing firmware.
- DInstall the update across all active cluster nodes simultaneously without staging to reduce total outage duration.
Answer
Prior to flashing device software, administrators must back up existing system images and configurations off-device, and verify change management authorization alongside baseline performance capture.
Safe software updates require preserving a clean rollback state (backing up current configurations and firmware off-device) and adhering to organizational governance (securing change management approval and recording health baselines before making changes).
Step-by-Step Solution
Key Concept
Software Maintenance Governance and Rollback Planning