- A
Configure IAM roles to restrict push access to Artifact Registry
Why wrong: This controls who can push images, but not which images come from a specific build trigger.
- B
Configure Binary Authorization with a policy requiring attestation from Cloud Build
Binary Authorization can enforce that only images with a valid attestation from Cloud Build are deployed.
- C
Use Cloud Deploy with a manual approval gate
Why wrong: This adds a human approval step but does not verify the image origin.
- D
Use Cloud Build's built-in approval mechanism
Why wrong: Cloud Build does not have a built-in approval mechanism for images.
Question 610 of 999
PCD Building and testing applications Practice Question
This PCD practice question tests your understanding of building and testing applications. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 uses Cloud Build to build Docker images and push them to Artifact Registry. They want to ensure that only images built from a specific Cloud Build trigger are deployed to production. Which combination of steps should they implement?
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
✓
Configure Binary Authorization with a policy requiring attestation from Cloud Build
Binary Authorization enforces deployment-time policies that require images to have a valid attestation from an approved authority. By configuring Cloud Build to create an attestation for images built from the specific trigger, and setting a Binary Authorization policy that requires that attestation, only those attested images can be deployed to production. This directly ensures that only images from that trigger are used.
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.
- ✗
Configure IAM roles to restrict push access to Artifact Registry
Why it's wrong here
This controls who can push images, but not which images come from a specific build trigger.
- ✓
Configure Binary Authorization with a policy requiring attestation from Cloud Build
Why this is correct
Binary Authorization can enforce that only images with a valid attestation from Cloud Build are deployed.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use Cloud Deploy with a manual approval gate
Why it's wrong here
This adds a human approval step but does not verify the image origin.
- ✗
Use Cloud Build's built-in approval mechanism
Why it's wrong here
Cloud Build does not have a built-in approval mechanism for images.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse IAM-based access control (Option A) with deployment-time policy enforcement, failing to realize that IAM cannot distinguish images built from different triggers once they are in the registry.
Detailed technical explanation
How to think about this question
Binary Authorization uses a policy that references attestors, which are cryptographic keys or authorities that sign image digests. Cloud Build can be configured with a step that uses the `gcloud container binauthz attestations create` command to sign the image digest with the attestor's private key. The policy then checks the signature against the public key before allowing deployment, ensuring that only images built by the authorized Cloud Build trigger (which has access to the private key) can pass the policy. This is especially critical in regulated environments where supply chain integrity must be verified at every deployment.
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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FAQ
Questions learners often ask
What does this PCD question test?
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: Configure Binary Authorization with a policy requiring attestation from Cloud Build — Binary Authorization enforces deployment-time policies that require images to have a valid attestation from an approved authority. By configuring Cloud Build to create an attestation for images built from the specific trigger, and setting a Binary Authorization policy that requires that attestation, only those attested images can be deployed to production. This directly ensures that only images from that trigger are used.
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.
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: Jul 4, 2026
This PCD 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 PCD exam.
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