- A
Use `secretEnv` to reference a Secret Manager secret
Correct: `secretEnv` injects secrets securely.
- B
Store the key in a Cloud Build substitution variable
Why wrong: Substitutions are visible in build logs.
- C
Pass the key via `args` with a substitution
Why wrong: Args are visible in logs.
- D
Store the key in a Cloud Storage bucket and download it in the build
Why wrong: Downloading a file exposes it in the build workspace; not secure.
Question 464 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. 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.
An organization uses Cloud Build and wants to inject a secret API key into a build step without exposing it in the cloudbuild.yaml. Which approach should they use?
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 `secretEnv` to reference a Secret Manager secret
Option A is correct because Cloud Build's `secretEnv` field allows you to reference a secret stored in Secret Manager and inject it as an environment variable into a build step. This approach ensures the secret value is never exposed in the `cloudbuild.yaml` file or build logs, as Cloud Build retrieves it securely at runtime using the Secret Manager API.
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 `secretEnv` to reference a Secret Manager secret
Why this is correct
Correct: `secretEnv` injects secrets securely.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Store the key in a Cloud Build substitution variable
Why it's wrong here
Substitutions are visible in build logs.
- ✗
Pass the key via `args` with a substitution
Why it's wrong here
Args are visible in logs.
- ✗
Store the key in a Cloud Storage bucket and download it in the build
Why it's wrong here
Downloading a file exposes it in the build workspace; not secure.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse substitution variables with secure injection, not realizing that substitution variables are resolved and visible in logs, while `secretEnv` is specifically designed to keep secrets out of logs and configuration files.
Detailed technical explanation
How to think about this question
Under the hood, Cloud Build uses the Secret Manager API to fetch the secret value at build runtime, and the secret is only available as an environment variable within the specified build step; it is not written to disk or logged. The `secretEnv` field references the secret by its resource name (e.g., `projects/PROJECT_ID/secrets/SECRET_NAME/versions/latest`), and Cloud Build automatically handles versioning and access via the Cloud Build service account's IAM permissions. A real-world scenario where this matters is when building a container image that needs to authenticate to a private registry; using `secretEnv` ensures the registry token is never embedded in the image layers or build logs.
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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
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 `secretEnv` to reference a Secret Manager secret — Option A is correct because Cloud Build's `secretEnv` field allows you to reference a secret stored in Secret Manager and inject it as an environment variable into a build step. This approach ensures the secret value is never exposed in the `cloudbuild.yaml` file or build logs, as Cloud Build retrieves it securely at runtime using the Secret Manager API.
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
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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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