- A
Use Cloud Scheduler to run a script that checks error budget and rolls back if needed.
Why wrong: Script solution is brittle; not a managed service.
- B
Set up a deployment pipeline with Cloud Deploy that includes a predeployment validation step that checks the current error budget burn rate and blocks the release if the burn rate exceeds 10% per hour.
Automated policy prevents deployments that would consume error budget quickly.
- C
Implement a canary deployment strategy with manual approval steps.
Why wrong: Manual approval delays rollback; not fully automated.
- D
Configure Cloud Build to automatically revert the last commit if error budget is consumed.
Why wrong: Cloud Build is for building containers, not for rollback orchestration.
Question 943 of 1,000
PCDOE Managing service incidents Practice Question
This PCDOE practice question tests your understanding of managing service incidents. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
An organization has a service that must meet a 99.99% SLO. The service runs on GKE and uses Cloud SQL. The team notices that during a major incident, the error budget is consumed rapidly. They want to implement a mechanism to automatically rollback deployments that cause sustained error budget consumption above a threshold. What is the best approach?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"best"Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
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
✓
Set up a deployment pipeline with Cloud Deploy that includes a predeployment validation step that checks the current error budget burn rate and blocks the release if the burn rate exceeds 10% per hour.
Option B is correct because Cloud Deploy provides deployment orchestration with built-in validation steps that can check error budget burn rate before releasing. Predeployment validation allows blocking a release if the burn rate exceeds a threshold (e.g., 10% per hour), preventing further SLO consumption. Option A is wrong because Cloud Scheduler runs on a schedule, not triggered by deployments, and cannot inspect error budget in real time. Option C is wrong because manual approval steps require human intervention and do not automate rollback based on error budget metrics. Option D is wrong because Cloud Build is a CI tool, not a deployment orchestrator; reverting commits does not roll back running deployments, and it lacks the context of error budget burn rate.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use Cloud Scheduler to run a script that checks error budget and rolls back if needed.
Why it's wrong here
Script solution is brittle; not a managed service.
- ✓
Set up a deployment pipeline with Cloud Deploy that includes a predeployment validation step that checks the current error budget burn rate and blocks the release if the burn rate exceeds 10% per hour.
Why this is correct
Automated policy prevents deployments that would consume error budget quickly.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Implement a canary deployment strategy with manual approval steps.
Why it's wrong here
Manual approval delays rollback; not fully automated.
- ✗
Configure Cloud Build to automatically revert the last commit if error budget is consumed.
Why it's wrong here
Cloud Build is for building containers, not for rollback orchestration.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Got this wrong? Here's your next step.
Identify which PCDOE exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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Managing service incidents — study guide chapter
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FAQ
Questions learners often ask
What does this PCDOE question test?
Managing service incidents — This question tests Managing service incidents — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Set up a deployment pipeline with Cloud Deploy that includes a predeployment validation step that checks the current error budget burn rate and blocks the release if the burn rate exceeds 10% per hour. — Option B is correct because Cloud Deploy provides deployment orchestration with built-in validation steps that can check error budget burn rate before releasing. Predeployment validation allows blocking a release if the burn rate exceeds a threshold (e.g., 10% per hour), preventing further SLO consumption. Option A is wrong because Cloud Scheduler runs on a schedule, not triggered by deployments, and cannot inspect error budget in real time. Option C is wrong because manual approval steps require human intervention and do not automate rollback based on error budget metrics. Option D is wrong because Cloud Build is a CI tool, not a deployment orchestrator; reverting commits does not roll back running deployments, and it lacks the context of error budget burn rate.
What should I do if I get this PCDOE question wrong?
Identify which PCDOE exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
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