- A
Store build artifacts in AWS CodeArtifact
Why wrong: CodeArtifact is for dependencies, not build outputs
- B
Enable versioning on the S3 bucket storing build artifacts
Versioning retains all artifact versions for rollback
- C
Configure a concurrency limit in the CodeBuild project for each microservice
Limits concurrent builds to one per project
- D
Create a separate CodePipeline for each microservice
Why wrong: Separate pipelines do not control concurrency within a microservice
- E
Enable server-side encryption on the S3 bucket storing build artifacts
Encrypts artifacts at rest
Question 1,068 of 1,750
How to Configure Concurrency Limits and Secure Artifact Storage for Microservices CI/CD
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.
A DevOps team is implementing a CI/CD pipeline for a microservices architecture. Each microservice is built and deployed independently. The team wants to ensure that only one build runs per microservice at a time to avoid resource contention, and that the build artifacts are stored securely. Which THREE steps should the team take?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Enable versioning on the S3 bucket storing build artifacts
Option B is correct because enabling versioning on the S3 bucket that stores build artifacts allows you to preserve, retrieve, and restore every version of every artifact. This is critical for auditability, rollback, and traceability in a CI/CD pipeline. Without versioning, if an artifact is overwritten or deleted, the previous version is permanently lost, which violates the requirement for secure and reliable artifact storage.
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.
- ✗
Store build artifacts in AWS CodeArtifact
Why it's wrong here
CodeArtifact is for dependencies, not build outputs
- ✓
Enable versioning on the S3 bucket storing build artifacts
Why this is correct
Versioning retains all artifact versions for rollback
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Configure a concurrency limit in the CodeBuild project for each microservice
Why this is correct
Limits concurrent builds to one per project
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Create a separate CodePipeline for each microservice
Why it's wrong here
Separate pipelines do not control concurrency within a microservice
- ✓
Enable server-side encryption on the S3 bucket storing build artifacts
Why this is correct
Encrypts artifacts at rest
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse AWS CodeArtifact (for package management) with S3 (for artifact storage), or they assume that creating separate pipelines inherently enforces concurrency limits, when in fact concurrency must be explicitly configured in the CodeBuild project settings.
Trap categories for this question
Command / output trap
CodeArtifact is for dependencies, not build outputs
Detailed technical explanation
How to think about this question
Under the hood, S3 versioning works by assigning a unique version ID to each object upload; when an object is deleted, a delete marker is inserted, and the previous versions remain recoverable. In a CI/CD pipeline, this means that if a build artifact is accidentally overwritten or corrupted, you can easily restore the previous version using the S3 API or console. A real-world scenario is when a failed deployment pushes a bad artifact that overwrites a good one; with versioning, you can immediately roll back by retrieving the prior version ID.
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.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this DOP-C02 question test?
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 versioning on the S3 bucket storing build artifacts — Option B is correct because enabling versioning on the S3 bucket that stores build artifacts allows you to preserve, retrieve, and restore every version of every artifact. This is critical for auditability, rollback, and traceability in a CI/CD pipeline. Without versioning, if an artifact is overwritten or deleted, the previous version is permanently lost, which violates the requirement for secure and reliable artifact storage.
What should I do if I get this DOP-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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Last reviewed: Jul 4, 2026
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