The answer is to enable local caching in the CodeBuild project and specify the cache location as /root/.m2. This works because AWS CodeBuild’s local caching feature allows you to preserve the contents of a specified directory—in this case, the Maven local repository at /root/.m2—across subsequent builds, so dependencies downloaded once are reused instead of being fetched again. On the AWS Certified DevOps Engineer Professional DOP-C02 exam, this question tests your understanding of CodeBuild’s cache types: local versus S3, and the specific use case for dependency caching. A common trap is confusing local caching with Docker layer caching, which only applies to Docker builds, or assuming S3 caching is a built-in option when it actually requires manual configuration. Remember the mnemonic “M2 for Maven” to link the default Maven repository path with local caching.
DOP-C02 SDLC Automation Practice Question
This DOP-C02 practice question tests your understanding of sdlc automation. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 DevOps team uses AWS CodeBuild to compile a Java application. The build environment is managed by AWS and runs on Linux. The team wants to speed up the build process by caching dependency directories across builds. Which configuration should the team use?
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 and specify the cache location as /root/.m2
Option B is correct because CodeBuild supports local caching, which can be configured to cache specific directories like the Maven local repository. Option A is wrong because S3 caching is not a built-in CodeBuild feature. Option C is wrong because it is not specific to dependency caching. Option D is wrong because Docker layer caching is for Docker builds, not Java dependencies.
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 the buildspec file to use Docker layer caching
Why it's wrong here
Docker layer caching is for Docker images, not Java dependencies.
✗
Use the CodeBuild cache configuration to store the entire build output in a custom Docker image
Why it's wrong here
This is not about dependency caching.
✗
Store dependencies in an Amazon S3 bucket and download them at the start of each build
Why it's wrong here
This is manual and not integrated with CodeBuild's caching mechanism.
✓
Enable local caching in the CodeBuild project and specify the cache location as /root/.m2
Why this is correct
Local caching reuses files from previous builds on the same build agent.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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 DOP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
SDLC Automation — This question tests SDLC Automation — 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 and specify the cache location as /root/.m2 — Option B is correct because CodeBuild supports local caching, which can be configured to cache specific directories like the Maven local repository. Option A is wrong because S3 caching is not a built-in CodeBuild feature. Option C is wrong because it is not specific to dependency caching. Option D is wrong because Docker layer caching is for Docker builds, not Java dependencies.
What should I do if I get this DOP-C02 question wrong?
Identify which DOP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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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