- A
Use Helm charts with separate values files per environment
Why wrong: Helm is also valid, but Kustomize is simpler for this use case and natively integrated with kubectl.
- B
Use kubectl apply with different manifest files for each environment
Why wrong: Duplicates code; hard to maintain.
- C
Use Config Connector to manage GKE clusters
Why wrong: Config Connector manages GCP resources, not Kubernetes manifests on clusters.
- D
Use Kustomize with overlays for each environment
Kustomize overlays inherit base and override specifics, ideal for environment-specific configs.
Question 662 of 1,000
PCDE Practice Question: Building and Implementing CI/CD Pipelines for a Service
This PCDE practice question tests your understanding of building and implementing ci/cd pipelines for a service. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 DevOps engineer needs to deploy the same application to multiple GKE clusters across environments (dev, staging, prod) with environment-specific configurations. They want to use a single source of truth for Kubernetes manifests. Which approach is most suitable?
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
✓
Use Kustomize with overlays for each environment
Kustomize is the most suitable approach because it allows you to maintain a single base set of Kubernetes manifests and apply environment-specific overlays (dev, staging, prod) without templating. This aligns with the requirement for a single source of truth while enabling environment-specific configurations through patches and transformers, all managed natively by kubectl.
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 Helm charts with separate values files per environment
Why it's wrong here
Helm is also valid, but Kustomize is simpler for this use case and natively integrated with kubectl.
- ✗
Use kubectl apply with different manifest files for each environment
Why it's wrong here
Duplicates code; hard to maintain.
- ✗
Use Config Connector to manage GKE clusters
Why it's wrong here
Config Connector manages GCP resources, not Kubernetes manifests on clusters.
- ✓
Use Kustomize with overlays for each environment
Why this is correct
Kustomize overlays inherit base and override specifics, ideal for environment-specific configs.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Helm's templating with a single source of truth, but the question explicitly requires a single source of truth for Kubernetes manifests, not templates, making Kustomize's overlay approach the correct choice.
Detailed technical explanation
How to think about this question
Kustomize works by using a kustomization.yaml file that references a base directory of Kubernetes resources and applies overlays via strategic merge patches, JSON patches, or generators like ConfigMapGenerator. This allows you to override fields (e.g., replicas, environment variables) per environment without duplicating the entire manifest, and the output is pure YAML that can be validated before apply. In a real-world scenario, you might use a CI/CD pipeline to run `kubectl kustomize overlays/prod` to generate the final manifest and then apply it, ensuring consistency across clusters.
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.
TExam Day Tips
- 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 exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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Building and Implementing CI/CD Pipelines for a Service — study guide chapter
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FAQ
Questions learners often ask
What does this PCDE question test?
Building and Implementing CI/CD Pipelines for a Service — This question tests Building and Implementing CI/CD Pipelines for a Service — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use Kustomize with overlays for each environment — Kustomize is the most suitable approach because it allows you to maintain a single base set of Kubernetes manifests and apply environment-specific overlays (dev, staging, prod) without templating. This aligns with the requirement for a single source of truth while enabling environment-specific configurations through patches and transformers, all managed natively by kubectl.
What should I do if I get this PCDE question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
This PCDE 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 PCDE exam.
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