- A
Use a single Cloud Build trigger with a Dockerfile build step that builds all services.
Why wrong: This would build all services on every push, which is inefficient.
- B
Use Cloud Functions to invoke Cloud Build per changed directory.
Why wrong: This is overengineered compared to using native includeFiles filters.
- C
Create multiple Cloud Build triggers, each with a different includeFiles filter matching the service directory.
includeFiles and excludeFiles allow triggering only when files in specific paths change.
- D
Use a Cloud Build trigger with a build config that dynamically detects changes using git diff.
Why wrong: While possible, it's not a native Cloud Build feature and adds complexity.
Question 851 of 1,000
PCDOE Building and implementing CI/CD pipelines Practice Question
This PCDOE practice question tests your understanding of building and implementing ci/cd pipelines. 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 team uses a monorepo with multiple microservices in separate directories. They want to build only the changed service(s) when a push occurs to the repo. How can they achieve this efficiently?
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
✓
Create multiple Cloud Build triggers, each with a different includeFiles filter matching the service directory.
Option C is correct because Cloud Build triggers can be configured with includeFiles filters to trigger only when files in a specific directory change, allowing each microservice to build independently. Option A builds all services, which is inefficient for a monorepo with multiple microservices. Option B uses Cloud Functions to invoke Cloud Build, adding unnecessary complexity and overhead. Option D relies on dynamic detection with git diff, which is not a built-in feature of Cloud Build triggers and would require custom scripting.
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 a single Cloud Build trigger with a Dockerfile build step that builds all services.
Why it's wrong here
This would build all services on every push, which is inefficient.
- ✗
Use Cloud Functions to invoke Cloud Build per changed directory.
Why it's wrong here
This is overengineered compared to using native includeFiles filters.
- ✓
Create multiple Cloud Build triggers, each with a different includeFiles filter matching the service directory.
Why this is correct
includeFiles and excludeFiles allow triggering only when files in specific paths change.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use a Cloud Build trigger with a build config that dynamically detects changes using git diff.
Why it's wrong here
While possible, it's not a native Cloud Build feature and adds complexity.
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.
Quick reference
Cloud Service Model Comparison
| Model | You Manage | Provider Manages | Examples |
|---|---|---|---|
| IaaS | OS, runtime, apps, data | Hardware, hypervisor, networking | EC2, Azure VMs, GCP Compute Engine |
| PaaS | Apps and data | OS, runtime, middleware, hardware | Elastic Beanstalk, Azure App Service |
| SaaS | Data and settings only | Everything else | Microsoft 365, Salesforce, Workday |
| FaaS / Serverless | Function code only | Infra, scaling, runtime | Lambda, Azure Functions, Cloud Run |
| CaaS | Containers and apps | Kubernetes, OS, hardware | EKS, AKS, GKE |
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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Building and implementing CI/CD pipelines — study guide chapter
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Building and implementing CI/CD pipelines practice questions
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FAQ
Questions learners often ask
What does this PCDOE question test?
Building and implementing CI/CD pipelines — This question tests Building and implementing CI/CD pipelines — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create multiple Cloud Build triggers, each with a different includeFiles filter matching the service directory. — Option C is correct because Cloud Build triggers can be configured with includeFiles filters to trigger only when files in a specific directory change, allowing each microservice to build independently. Option A builds all services, which is inefficient for a monorepo with multiple microservices. Option B uses Cloud Functions to invoke Cloud Build, adding unnecessary complexity and overhead. Option D relies on dynamic detection with git diff, which is not a built-in feature of Cloud Build triggers and would require custom scripting.
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.
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 →
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Last reviewed: Jun 24, 2026
This PCDOE 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 PCDOE exam.
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