220-1102 Operational Procedures Practice Question
A technician is decommissioning an old server that hosts a legacy application. The change has been approved by the Change Advisory Board (CAB). After decommissioning, users report that a critical report no longer runs. The technician discovers that the report depended on a scheduled task on the old server that was not migrated. According to change management best practices, what should the technician have done to prevent this issue?
⚠ Common exam trap
Watch out — candidates often confuse 'implementing during business hours' with 'having a rollback plan,' but the question specifically tests the change management best practice of documenting and testing a rollback before the change is executed.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Ensured a rollback plan was documented and tested before decommissioning
The technician failed to follow change management best practices by not documenting and testing a rollback plan before decommissioning the old server. A rollback plan would have included steps to restore the scheduled task or the server itself if the migration proved incomplete. Without a tested rollback, the critical report failed because the dependency on the scheduled task was overlooked.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Implemented the change during business hours to allow immediate reversal
Why it's wrong here
Decommissioning during business hours to allow immediate reversal still fails to address the need for a pre-tested rollback and dependency analysis. The technician would have no verified restoration procedure ready when the report failure occurred, and any attempt to reverse would itself be untested and potentially disruptive to active users. Timing alone cannot compensate for missing change-planning artifacts.
- ✓
Ensured a rollback plan was documented and tested before decommissioning
Why this is correct
A documented and tested rollback plan is the definitive change-control safeguard because it specifies the exact restoration steps, whether backups are restorable, and how to validate recovery of the legacy application. When the report failure surfaced after decommissioning, the technician could have executed this pre-approved plan to bring the old server back quickly, limiting downtime. This directly addresses the root cause: lack of preparation for failed decommissioning.
- ✗
Required all users who depended on the server to be present during the change
Why it's wrong here
Requiring all dependent users to be present assumes users know every upstream system that relies on the legacy server, but dependencies are often implicit and buried in scripts, scheduled tasks, or network mounts. Presence of users also does not provide a technical method to roll back the decommission or verify service restoration. The correct approach is to map dependencies through system documentation, CMDB queries, or application inventories before the change.
- ✗
Performed the decommissioning after normal business hours without additional testing
Why it's wrong here
Moving the decommissioning to after hours without additional testing reduces immediate user exposure but leaves critical dependencies undiscovered and the rollback unvalidated. If the legacy application failure was only noticed the next morning, the technician would be starting an untested recovery while facing normal business demands. After-hours changes still require the same impact analysis and tested backout plan that business-hours changes require.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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