Google PCA Practice Question: Analyze and optimize technical and business processes
This PCA practice question tests your understanding of analyze and optimize technical and business processes. 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 company uses Cloud Build to automate their CI/CD pipeline. They want to optimize the build process for a Java application. Which three practices should they adopt? (Choose three.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Parallelize independent build steps by using Cloud Build's step parallelism or by splitting into multiple builds.
Option A is correct because Cloud Build allows you to define build steps that run sequentially by default, but you can parallelize independent steps by using the `waitFor` field to specify dependencies. This reduces total build time by running non-dependent steps concurrently, which is a key optimization for CI/CD pipelines. Splitting into multiple builds is also a valid approach for parallel execution.
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.
✓
Parallelize independent build steps by using Cloud Build's step parallelism or by splitting into multiple builds.
Why this is correct
Reduces overall build time.
Related concept
Read the scenario before looking for a memorised answer.
✓
Store Maven dependencies in a private repository in Artifact Registry for faster access.
Why this is correct
Reduces dependency download time.
Related concept
Read the scenario before looking for a memorised answer.
✓
Use Docker layer caching with Cloud Build by specifying a cached image.
Why this is correct
Reduces rebuild time by reusing layers.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use a custom build step that downloads all tools from the internet each time.
Why it's wrong here
Inefficient; caching is better.
✗
Use a high-CPU machine type (e.g., n1-highcpu-64) for faster compilation.
Why it's wrong here
Costly and not as effective as caching.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Google Cloud often tests the misconception that you can arbitrarily choose high-CPU machine types in Cloud Build, but Cloud Build does not support custom machine types in its standard configuration—this is a trap where candidates confuse Cloud Build with Compute Engine or other GCP services.
Detailed technical explanation
How to think about this question
Cloud Build's step parallelism works by defining a dependency graph via the `waitFor` field; steps with no dependencies on each other run concurrently. For Maven dependencies, Artifact Registry provides a private, low-latency repository that avoids repeated downloads from public Maven Central, and you can configure Maven's `settings.xml` to use it. Docker layer caching in Cloud Build uses the `--cache-from` flag with a previously built image to reuse unchanged layers, significantly speeding up subsequent builds by avoiding redundant image layers.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this PCA question in full detail.
Analyze and optimize technical and business processes — This question tests Analyze and optimize technical and business processes — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Parallelize independent build steps by using Cloud Build's step parallelism or by splitting into multiple builds. — Option A is correct because Cloud Build allows you to define build steps that run sequentially by default, but you can parallelize independent steps by using the `waitFor` field to specify dependencies. This reduces total build time by running non-dependent steps concurrently, which is a key optimization for CI/CD pipelines. Splitting into multiple builds is also a valid approach for parallel execution.
What should I do if I get this PCA 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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