PCD Building and testing applications Practice Question
This PCD practice question tests your understanding of building and testing applications. 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 team is implementing a CI/CD pipeline for a Cloud Function using Cloud Build. Which three steps should they include in their cloudbuild.yaml? (Choose 3)
Static analysis (linting, security scanning) is a good practice to include in the pipeline.
B
Deploy the function
The final step should deploy the function using `gcloud functions deploy`.
C
Run unit tests
Unit tests are essential to validate function logic before deployment.
D
Build a container image
Why wrong: Cloud Functions (2nd gen) can use containers, but for 1st gen, source is deployed directly; if using 2nd gen with containers, this step is needed, but the question implies a standard Cloud Function, and the other three steps are more universally needed.
E
Manual approval step
Why wrong: Manual approval is not a step in cloudbuild.yaml; it can be configured as a separate trigger requirement.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Static code analysis
Static code analysis (A) is correct because it helps identify code quality issues, security vulnerabilities, and adherence to coding standards early in the pipeline, which is a best practice for Cloud Functions. Running unit tests (C) is essential to validate function logic before deployment. Deploying the function (B) is the final step that pushes the validated code to Cloud Functions, making it a required step in the CI/CD pipeline.
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.
✓
Static code analysis
Why this is correct
Static analysis (linting, security scanning) is a good practice to include in the pipeline.
Related concept
Read the scenario before looking for a memorised answer.
✓
Deploy the function
Why this is correct
The final step should deploy the function using `gcloud functions deploy`.
Related concept
Read the scenario before looking for a memorised answer.
✓
Run unit tests
Why this is correct
Unit tests are essential to validate function logic before deployment.
Related concept
Read the scenario before looking for a memorised answer.
✗
Build a container image
Why it's wrong here
Cloud Functions (2nd gen) can use containers, but for 1st gen, source is deployed directly; if using 2nd gen with containers, this step is needed, but the question implies a standard Cloud Function, and the other three steps are more universally needed.
✗
Manual approval step
Why it's wrong here
Manual approval is not a step in cloudbuild.yaml; it can be configured as a separate trigger requirement.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the misconception that Cloud Functions require building a container image for all runtimes, but in reality, only custom container runtimes (e.g., using Dockerfile) need that step, while the default runtimes use source-based deployment.
Detailed technical explanation
How to think about this question
Cloud Build uses a series of build steps defined in cloudbuild.yaml, where each step runs in a container. For Cloud Functions, the 'gcloud functions deploy' command is typically used in a build step, which automatically handles packaging the source code and uploading it to the Cloud Functions service. Static code analysis can be integrated using tools like ESLint, pylint, or gosec, and unit tests are run using language-specific frameworks (e.g., pytest, jest) within the build environment.
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: Static code analysis — Static code analysis (A) is correct because it helps identify code quality issues, security vulnerabilities, and adherence to coding standards early in the pipeline, which is a best practice for Cloud Functions. Running unit tests (C) is essential to validate function logic before deployment. Deploying the function (B) is the final step that pushes the validated code to Cloud Functions, making it a required step in the CI/CD pipeline.
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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