- A
Use the 'env' field to pass the secret as a build substitution variable
Why wrong: Substitution variables can be logged and exposed in build logs.
- B
Use the 'secretEnv' field in the build step to reference a secret from Secret Manager
secretEnv injects the secret as an environment variable without logging it.
- C
Encrypt the entire cloudbuild.yaml using Cloud KMS
Why wrong: Encrypting the file prevents reading but does not prevent logs from showing the decrypted values.
- D
Store the secret in Secret Manager and assign appropriate permissions to the Cloud Build service account
The service account needs access to read the secret from Secret Manager.
- E
Store the secret value directly in the cloudbuild.yaml file
Why wrong: Storing secrets in clear text in the file exposes them.
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 to build and deploy applications. They need to ensure that build secrets (e.g., API tokens) are securely injected into build steps without being exposed in the build logs. Which two actions should they take?
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 the 'secretEnv' field in the build step to reference a secret from Secret Manager
Option B is correct because the `secretEnv` field in a Cloud Build step allows you to inject a secret from Secret Manager into the build environment as an environment variable, without the secret value being written to build logs. This ensures the secret is available to the step at runtime but never exposed in log output.
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 the 'env' field to pass the secret as a build substitution variable
Why it's wrong here
Substitution variables can be logged and exposed in build logs.
- ✓
Use the 'secretEnv' field in the build step to reference a secret from Secret Manager
Why this is correct
secretEnv injects the secret as an environment variable without logging it.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Encrypt the entire cloudbuild.yaml using Cloud KMS
Why it's wrong here
Encrypting the file prevents reading but does not prevent logs from showing the decrypted values.
- ✓
Store the secret in Secret Manager and assign appropriate permissions to the Cloud Build service account
Why this is correct
The service account needs access to read the secret from Secret Manager.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Store the secret value directly in the cloudbuild.yaml file
Why it's wrong here
Storing secrets in clear text in the file exposes them.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that encrypting the build configuration file or using plain environment variables is sufficient for secret management, when in fact only Secret Manager with `secretEnv` prevents log exposure.
Trap categories for this question
Command / output trap
Encrypting the file prevents reading but does not prevent logs from showing the decrypted values.
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 runtime and injects it into the build step's environment without ever writing it to the build log. The `secretEnv` field references a secret by its resource name (e.g., `projects/PROJECT_ID/secrets/SECRET_NAME/versions/latest`), and the Cloud Build service account must have the `secretmanager.secretAccessor` role to retrieve it. In a real-world scenario, this pattern is critical for CI/CD pipelines that deploy to production, where API tokens or database passwords must remain confidential.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
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 the 'secretEnv' field in the build step to reference a secret from Secret Manager — Option B is correct because the `secretEnv` field in a Cloud Build step allows you to inject a secret from Secret Manager into the build environment as an environment variable, without the secret value being written to build logs. This ensures the secret is available to the step at runtime but never exposed in log output.
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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