- A
Break the monolith into separate Cloud Build triggers per module and run them independently on every push.
Why wrong: This doesn't handle dependencies; independent triggers could build modules without their dependencies.
- B
Create a single build config that defines parallel steps for independent modules, using 'waitFor' to sequence dependent modules, and uses Maven's incremental compilation with caching.
This models the dependency graph and runs independent modules in parallel, plus caching speeds up subsequent builds.
- C
Use a build step that runs 'mvn -pl moduleA,moduleB -am' to build only changed modules and their dependencies.
Why wrong: This still runs sequentially on one machine, not leveraging Cloud Build's parallel steps.
- D
Increase the Cloud Build timeout to 4 hours and keep a single build step.
Why wrong: This doesn't reduce build time; it only allows the build to take longer.
PCDOE Building and implementing CI/CD pipelines Practice Question
This PCDOE practice question tests your understanding of building and implementing ci/cd pipelines. 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 company is migrating from Jenkins to Cloud Build for their CI/CD pipeline. They have a large Java monorepo with multiple modules that take over 2 hours to build and test sequentially. They want to reduce build time by running module builds in parallel. The current Jenkins pipeline uses a single Jenkinsfile that builds all modules. They have a Cloud Build config that runs 'mvn clean package' for the entire project, which is slow. They have a 2-hour Cloud Build timeout. The architecture requires that some modules depend on others. Which approach should they take to minimize build time while correctly handling dependencies?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"minimum / minimize"Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
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 a single build config that defines parallel steps for independent modules, using 'waitFor' to sequence dependent modules, and uses Maven's incremental compilation with caching.
Option C is correct: Using Cloud Build's 'waitFor' to model dependency DAG allows parallel builds of independent modules, reducing total time. Option A is incorrect because building each module individually without dependencies would break dependent modules. Option B is incorrect because a single build step is exactly what they have now. Option D is incorrect because the 'mvn -pl' approach still runs on a single machine and doesn't leverage Cloud Build's parallelism.
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.
- ✗
Break the monolith into separate Cloud Build triggers per module and run them independently on every push.
Why it's wrong here
This doesn't handle dependencies; independent triggers could build modules without their dependencies.
- ✓
Create a single build config that defines parallel steps for independent modules, using 'waitFor' to sequence dependent modules, and uses Maven's incremental compilation with caching.
Why this is correct
This models the dependency graph and runs independent modules in parallel, plus caching speeds up subsequent builds.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use a build step that runs 'mvn -pl moduleA,moduleB -am' to build only changed modules and their dependencies.
Why it's wrong here
This still runs sequentially on one machine, not leveraging Cloud Build's parallel steps.
- ✗
Increase the Cloud Build timeout to 4 hours and keep a single build step.
Why it's wrong here
This doesn't reduce build time; it only allows the build to take longer.
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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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 a single build config that defines parallel steps for independent modules, using 'waitFor' to sequence dependent modules, and uses Maven's incremental compilation with caching. — Option C is correct: Using Cloud Build's 'waitFor' to model dependency DAG allows parallel builds of independent modules, reducing total time. Option A is incorrect because building each module individually without dependencies would break dependent modules. Option B is incorrect because a single build step is exactly what they have now. Option D is incorrect because the 'mvn -pl' approach still runs on a single machine and doesn't leverage Cloud Build's parallelism.
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: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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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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