The answer is to store build artifacts in an Amazon S3 bucket and configure each build project to download them from S3. This approach is correct because S3 provides a centralized, durable, and cross-project accessible storage layer, allowing multiple CodeBuild projects to reference the same compiled binaries or test outputs without rebuilding them. On the AWS Certified DevOps Engineer Professional DOP-C02 exam, this scenario tests your understanding of artifact sharing versus caching mechanisms—a common trap is confusing local caches (which are per-project and ephemeral) or Docker layer caching (which only applies to image builds) with persistent artifact storage. Remember that S3 is the only option that enables true cross-project reuse of build outputs, while EFS is designed for shared file systems, not build artifact distribution. Memory tip: think “S3 for sharing, cache for speed”—if you need to share across projects, always pick the bucket.
DOP-C02 SDLC Automation Practice Question
This DOP-C02 practice question tests your understanding of sdlc automation. 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.
An organization uses AWS CodeBuild to compile and test their code. They want to reuse build artifacts across multiple build projects to reduce build time. What is the BEST approach?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Store build artifacts in an Amazon S3 bucket and configure each build project to download them from S3.
Option C is correct because storing artifacts in S3 allows sharing across projects. Option A is wrong because local cache is per-project. Option B is wrong because Docker cache is for Docker images. Option D is wrong because EFS is not used for build artifacts.
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 the local cache feature in CodeBuild to store artifacts on the build instance.
Why it's wrong here
Local cache is only available within the same build project and not shared across projects.
✓
Store build artifacts in an Amazon S3 bucket and configure each build project to download them from S3.
Why this is correct
S3 is a durable storage that can be accessed by multiple build projects to fetch shared artifacts.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use Docker layer caching to store intermediate build layers.
Why it's wrong here
Docker layer caching is for Docker builds, not general artifacts.
✗
Mount an Amazon EFS file system to each build environment to share artifacts.
Why it's wrong here
EFS is not supported in CodeBuild environments.
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: Store build artifacts in an Amazon S3 bucket and configure each build project to download them from S3. — Option C is correct because storing artifacts in S3 allows sharing across projects. Option A is wrong because local cache is per-project. Option B is wrong because Docker cache is for Docker images. Option D is wrong because EFS is not used for build artifacts.
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.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
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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