- A
A Cloud Build trigger that runs kubectl apply on push
Why wrong: This would bypass Config Sync and is not GitOps as defined.
- B
A Kustomize overlay for each cluster
Why wrong: Kustomize can be used in Config Sync, but it's not a resource to configure sync.
- C
RepoSync resource pointing to the Git repository
RepoSync syncs namespace-scoped resources. Both can be used together.
- D
RootSync resource pointing to the Git repository
RootSync syncs cluster-scoped resources from a Git repository.
- E
An Argo CD Application resource
Why wrong: Argo CD is a different tool, not Config Sync.
Question 112 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.
An organization uses GitOps with Config Sync to manage multiple GKE clusters. They want to ensure that any change to the Git repository is automatically applied to the clusters, and that no manual kubectl apply commands are used. Which TWO resources should they configure?
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
✓
RepoSync resource pointing to the Git repository
Option C is correct because a RepoSync resource is used in Config Sync to synchronize a non-root namespace-level repository with the cluster, ensuring that any changes pushed to the Git repository are automatically applied without manual kubectl commands. Option D is correct because a RootSync resource is used to synchronize the root-level configuration (e.g., cluster-scoped resources) from a Git repository, providing the same automated GitOps workflow. Together, they cover both namespace and cluster-scoped resources, fulfilling the requirement of no manual kubectl apply.
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.
- ✗
A Cloud Build trigger that runs kubectl apply on push
Why it's wrong here
This would bypass Config Sync and is not GitOps as defined.
- ✗
A Kustomize overlay for each cluster
Why it's wrong here
Kustomize can be used in Config Sync, but it's not a resource to configure sync.
- ✓
RepoSync resource pointing to the Git repository
Why this is correct
RepoSync syncs namespace-scoped resources. Both can be used together.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
RootSync resource pointing to the Git repository
Why this is correct
RootSync syncs cluster-scoped resources from a Git repository.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
An Argo CD Application resource
Why it's wrong here
Argo CD is a different tool, not Config Sync.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Google often tests the distinction between RootSync and RepoSync, and the trap here is that candidates may confuse RepoSync (namespace-scoped) with RootSync (cluster-scoped) or incorrectly assume that any GitOps tool like Argo CD or Cloud Build is equivalent to Config Sync's native resources.
Detailed technical explanation
How to think about this question
Config Sync uses the open-source Nomos agent to reconcile the cluster state with the desired state defined in a Git repository, polling the repository at a configurable interval (default 15 seconds) or using a webhook for near-instant updates. RootSync and RepoSync are custom resources defined in the config-management-system namespace, with RootSync handling cluster-scoped resources (e.g., Namespaces, ClusterRoles) and RepoSync handling namespace-scoped resources within a specific namespace. A real-world scenario is a multi-tenant cluster where RootSync manages shared infrastructure and RepoSync per team ensures isolated namespace configurations.
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.
- →
Building and Implementing CI/CD Pipelines for a Service — study guide chapter
Learn the concepts, then practise the questions
- →
Building and Implementing CI/CD Pipelines for a Service practice questions
Targeted practice on this topic area only
- →
All PCDE questions
1,000 questions across all exam domains
- →
Google Professional Cloud Database Engineer study guide
Full concept coverage aligned to exam objectives
- →
PCDE practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related PCDE practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Building and Implementing CI/CD Pipelines for a Service practice questions
Practise PCDE questions linked to Building and Implementing CI/CD Pipelines for a Service.
Bootstrapping a Google Cloud Organisation for DevOps practice questions
Practise PCDE questions linked to Bootstrapping a Google Cloud Organisation for DevOps.
Applying Site Reliability Engineering Practices to a Service practice questions
Practise PCDE questions linked to Applying Site Reliability Engineering Practices to a Service.
Implementing Service Monitoring Strategies practice questions
Practise PCDE questions linked to Implementing Service Monitoring Strategies.
Optimising Service Performance practice questions
Practise PCDE questions linked to Optimising Service Performance.
Plan and manage database infrastructure practice questions
Practise PCDE questions linked to Plan and manage database infrastructure.
Define data structures and implement SQL for Business Intelligence practice questions
Practise PCDE questions linked to Define data structures and implement SQL for Business Intelligence.
Design and implement database schemas practice questions
Practise PCDE questions linked to Design and implement database schemas.
Monitor and optimize database performance practice questions
Practise PCDE questions linked to Monitor and optimize database performance.
PCDE fundamentals practice questions
Practise PCDE questions linked to PCDE fundamentals.
PCDE scenario practice questions
Practise PCDE questions linked to PCDE scenario.
PCDE troubleshooting practice questions
Practise PCDE questions linked to PCDE troubleshooting.
Practice this exam
Start a free PCDE practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
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: RepoSync resource pointing to the Git repository — Option C is correct because a RepoSync resource is used in Config Sync to synchronize a non-root namespace-level repository with the cluster, ensuring that any changes pushed to the Git repository are automatically applied without manual kubectl commands. Option D is correct because a RootSync resource is used to synchronize the root-level configuration (e.g., cluster-scoped resources) from a Git repository, providing the same automated GitOps workflow. Together, they cover both namespace and cluster-scoped resources, fulfilling the requirement of no manual kubectl apply.
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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.