ITIL4-CDS Create, Deliver and Support Practice Question
Exhibit
Error Log: [2023-10-12 14:02:11] Connection Timeout: Service_Gateway_01 Status: 504 Gateway Timeout Impact: High-Priority Customer Portal Resolution Status: Pending Note: Automated rollback initiated by CI/CD agent.
Refer to the exhibit. An automated deployment triggered an error. Based on CDS principles regarding 'Shift Left,' how should the team handle this failure to improve future service delivery?
⚠ Common exam trap
Candidates often choose 'redeploying the fix' or 'reporting the user,' ignoring that Shift Left requires feeding failure data back into development to prevent recurrence at the source.
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
✓
Perform a blameless post-implementation review and update the automated test suite.
The 'Shift Left' principle encourages moving activities closer to the source, such as testing and validation during development. By analyzing the failure log and feeding this data back into the design and testing phases, the team addresses the root cause of the deployment instability early. This prevents similar errors from reaching production and ensures that service delivery is more reliable, efficient, and resilient over time.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Increase the timeout threshold in the production environment settings.
Why it's wrong here
Modifying production thresholds is a reactive, surface-level fix that does not address the underlying architectural or code issue. This approach ignores the root cause and potentially masks recurring stability issues, failing to leverage the learning opportunities provided by the deployment failure for long-term improvement.
- ✓
Perform a blameless post-implementation review and update the automated test suite.
Why this is correct
Conducting a blameless review aligns with the 'Shift Left' principle by identifying gaps in testing logic. Updating the automated test suite ensures that the specific scenario causing the timeout is caught earlier in the development lifecycle, preventing similar production failures and enhancing overall service quality.
- ✗
Disable the automated rollback feature to prevent service disruption.
Why it's wrong here
Disabling automated rollback mechanisms is dangerous and contrary to CDS goals of resilience. Rollbacks are essential for maintaining service availability during failure. Removing them increases the risk of extended outages and prevents the system from automatically recovering when it detects an operational anomaly.
- ✗
Assign the incident to the infrastructure team for manual intervention.
Why it's wrong here
Relying on manual intervention contradicts the objective of automated, scalable service delivery. It creates a bottleneck and fails to utilize the insights gained from the failure to automate future processes or improve the reliability of the deployment pipeline through better design and earlier testing.
About these practice questions
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official PeopleCert/AXELOS exam blueprint
This ITIL4-CDS practice question is part of Courseiva's free PeopleCert/AXELOS certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the ITIL4-CDS exam.