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ACE Practice Question: A production GKE service processes payments and…
This ACE practice question tests your understanding of a production gke service processes payments and…. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
A production GKE service processes payments and must maintain at least 3 replicas running at all times, even during node upgrades or Pod evictions. How should this be enforced?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Distractor review
Set the Deployment replica count to 6 — node upgrades will only affect half at a time
Without a PDB, a node upgrade could drain multiple nodes simultaneously, removing more than half the Pods. Replica count alone doesn't enforce a minimum availability guarantee.
B
Best answer
Create a PodDisruptionBudget with minAvailable: 3 targeting the payment service Pods
A PDB with minAvailable: 3 instructs GKE's node drain process (during upgrades, autoscaler removals) to ensure at least 3 payment service Pods remain running throughout the disruption.
C
Distractor review
Add node affinity rules pinning all 3 replicas to specific long-lived nodes
Pinning to specific nodes makes Pods unschedulable elsewhere — if those nodes are upgraded or fail, the Pods can't be rescheduled.
D
Distractor review
Enable cluster autoscaler with minNodeCount=3 — this preserves Pod availability
minNodeCount ensures at least 3 nodes exist — it doesn't prevent Pods from being evicted simultaneously during upgrades.
Common exam trap
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.
Technical deep dive
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.
Related practice questions
Related ACE practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
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FAQ
Questions learners often ask
What does this ACE question test?
Read the scenario before looking for a memorised answer.
What is the correct answer to this question?
The correct answer is: Create a PodDisruptionBudget with minAvailable: 3 targeting the payment service Pods — A PodDisruptionBudget (PDB) with `minAvailable: 3` (or `maxUnavailable: 0` if the Deployment has exactly 3 replicas) prevents GKE's cluster upgrade drain and autoscaler from evicting more Pods than the budget allows simultaneously. This ensures 3 replicas remain available during disruptions.
What should I do if I get this ACE question wrong?
Identify which ACE 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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This ACE practice question is part of Courseiva's free Google Cloud 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 ACE exam.