- A
Increase the timeout for the CodeBuild project.
Why wrong: Timeout increase does not address corruption of the source archive.
- B
Enable versioning on the S3 bucket and use versioned objects in the pipeline.
Versioning prevents corruption issues by preserving object versions.
- C
Configure the pipeline to use AWS CodeCommit as the source instead of S3.
Why wrong: Changing source type does not fix the corruption on S3.
- D
Add a manual approval step before the build stage.
Why wrong: Manual approval does not prevent corruption.
Question 1,132 of 1,750
Fixing Corrupt Source Artifacts from S3 in CodePipeline
This DOP-C02 practice question tests your understanding of sdlc automation. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 CodePipeline with an S3 source action and a CodeBuild project. The pipeline fails intermittently during the build stage with an error indicating that the source code archive is corrupt. Which action should the DevOps engineer take to resolve this issue?
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 and use versioned objects in the pipeline.
The error indicates that the source code archive is corrupt, which typically occurs when a new object is uploaded to S3 while the pipeline is still referencing the old object. By enabling versioning on the S3 bucket and configuring the pipeline to use versioned objects, CodePipeline will always fetch the latest version of the object, preventing race conditions where an incomplete or overwritten archive is retrieved.
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.
- ✗
Increase the timeout for the CodeBuild project.
Why it's wrong here
Timeout increase does not address corruption of the source archive.
- ✓
Enable versioning on the S3 bucket and use versioned objects in the pipeline.
Why this is correct
Versioning prevents corruption issues by preserving object versions.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Configure the pipeline to use AWS CodeCommit as the source instead of S3.
Why it's wrong here
Changing source type does not fix the corruption on S3.
- ✗
Add a manual approval step before the build stage.
Why it's wrong here
Manual approval does not prevent corruption.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume the issue is with the build environment (timeout) or source type, rather than recognizing that S3 eventual consistency and lack of versioning can cause the pipeline to fetch an incomplete or overwritten archive.
Detailed technical explanation
How to think about this question
When S3 versioning is enabled, each object upload creates a new version ID, and CodePipeline can be configured to use the 'S3Version' parameter to reference a specific version. This ensures that the pipeline always retrieves the complete, finalized object, even if a concurrent upload overwrites the key. Without versioning, CodePipeline may read a partially written object if the upload is not atomic, leading to corruption errors.
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.
Visual reference
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 and use versioned objects in the pipeline. — The error indicates that the source code archive is corrupt, which typically occurs when a new object is uploaded to S3 while the pipeline is still referencing the old object. By enabling versioning on the S3 bucket and configuring the pipeline to use versioned objects, CodePipeline will always fetch the latest version of the object, preventing race conditions where an incomplete or overwritten archive is retrieved.
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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