This DVA-C02 practice question tests your understanding of deployment. 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 AWS CodeBuild to run tests and build artifacts for a Java application. The build process is taking longer than expected. The developer wants to speed up the build by caching dependencies. What should the developer do?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable local caching in the CodeBuild project configuration.
Option C is correct because CodeBuild's local caching feature allows the build environment to cache dependencies (e.g., Maven local repository) in a local directory that persists across build runs for the same project. This eliminates the need to re-download dependencies on every build, significantly reducing build time. The cache is stored on the build instance's local storage and is automatically managed by CodeBuild.
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 a CodeCommit repository to store dependencies.
Why it's wrong here
CodeCommit is not designed for caching dependencies.
✗
Store dependencies in an S3 bucket and download them in each build.
Why it's wrong here
This can still be slow and S3 is not a cache.
✓
Enable local caching in the CodeBuild project configuration.
Why this is correct
Local caching speeds up builds by reusing cached dependencies.
Related concept
Read the scenario before looking for a memorised answer.
✗
Mount an Amazon EFS file system to the build environment and store dependencies there.
Why it's wrong here
EFS adds latency and complexity.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume external storage (S3 or EFS) is required for caching, but CodeBuild's built-in local caching is specifically designed for this purpose and avoids the latency of network-based storage.
Detailed technical explanation
How to think about this question
CodeBuild local caching works by specifying a cache type (e.g., 'LOCAL') and a custom cache directory (e.g., /root/.m2 for Maven). The cache is stored on the build instance's ephemeral storage and is only available to builds in the same project and same environment type. Under the hood, CodeBuild uses a hash of the build project configuration and source to determine cache validity, and the cache is automatically invalidated if the build environment changes. In real-world scenarios, this can reduce build times from 10+ minutes to under 2 minutes for large Java projects with many dependencies.
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.
Deployment — This question tests Deployment — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Enable local caching in the CodeBuild project configuration. — Option C is correct because CodeBuild's local caching feature allows the build environment to cache dependencies (e.g., Maven local repository) in a local directory that persists across build runs for the same project. This eliminates the need to re-download dependencies on every build, significantly reducing build time. The cache is stored on the build instance's local storage and is automatically managed by CodeBuild.
What should I do if I get this DVA-C02 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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