The answer is to run tests in a build step using a custom builder, as this directly integrates test execution into the Cloud Build CI pipeline. This approach is correct because Cloud Build triggers can be configured to automatically start a build—including defined test steps—on specific events like a push to a branch, enabling continuous integration by validating every code change without manual intervention. On the Google Professional Cloud Developer exam, this tests your understanding of how to automate test execution in Cloud Build CI pipelines, often appearing as a scenario where you must select valid methods from a list; a common trap is confusing manual trigger invocation with automated event-based triggers. Remember that custom builders allow you to run any test framework, while pre-built images like `gcloud` or `docker` are for deployment, not testing. Memory tip: "Trigger on push, test with custom—no manual fuss."
PCD Building and testing applications Practice Question
This PCD practice question tests your understanding of building and testing applications. 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.
Which THREE are valid approaches for automating testing in a Cloud Build CI pipeline?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use Cloud Build triggers to run tests on every push to a branch.
Option B is correct because Cloud Build triggers can be configured to automatically start a build (including test steps) on specific events, such as a push to a branch. This enables continuous integration by validating every code change as soon as it is committed, without manual intervention.
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 Cloud Build to ship test results to Cloud Monitoring.
Why it's wrong here
This is a reporting feature, not a testing approach.
✓
Use Cloud Build triggers to run tests on every push to a branch.
Why this is correct
Automatically triggers tests on code changes.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use Cloud Build to run tests only after manual approval.
Why it's wrong here
Manual approval is not automated; it blocks the pipeline.
✓
Use Cloud Build to run tests in parallel across multiple steps.
Why this is correct
Parallel steps speed up test execution.
Related concept
Read the scenario before looking for a memorised answer.
✓
Run tests in a build step using a custom builder.
Why this is correct
Custom builders can include any test runner.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the distinction between automating test execution (triggers, parallel steps, custom builders) and related but non-automation features like monitoring or manual gates, leading candidates to select options that describe observability or approval workflows instead of actual test automation.
Detailed technical explanation
How to think about this question
Cloud Build uses build config files (cloudbuild.yaml) where you define steps that run in sequence or in parallel using the 'waitFor' field. For parallel test execution, you can set multiple steps with 'waitFor: ["-"]' to run concurrently, and custom builders allow you to use any Docker image (e.g., a test framework image) as a step. Under the hood, Cloud Build provisions a Compute Engine VM to execute the steps, and each step runs in a separate Docker container.
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 testing applications — This question tests Building and testing applications — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use Cloud Build triggers to run tests on every push to a branch. — Option B is correct because Cloud Build triggers can be configured to automatically start a build (including test steps) on specific events, such as a push to a branch. This enables continuous integration by validating every code change as soon as it is committed, without manual intervention.
What should I do if I get this PCD 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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Question Discussion
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