- A
Increase the file system size or add commands to clean up temporary files in the buildspec.
Cleaning up disk space or using a larger file system resolves the 'No space left' error.
- B
Configure the build to use an Amazon EFS file system to offload data.
Why wrong: EFS provides shared storage but does not increase the local build disk; the build may still use local storage.
- C
Switch the build environment to a compute type with more memory, such as general1.large.
Why wrong: More memory does not increase disk space; the error is about disk space.
- D
Enable the 'cache' feature in CodeBuild to reuse dependencies and reduce disk usage.
Why wrong: Caching dependencies may reduce download time but does not free up disk space if already filled.
Question 1,416 of 1,750
DOP-C02 SDLC Automation Practice Question
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 CodeBuild to compile and test Java code. The buildspec.yml file includes a 'pre_build' phase that runs unit tests. The build occasionally fails with the error 'No space left on device.' The build environment is a general1.medium EC2 instance with 160 GB of disk space. What is the MOST effective solution 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
✓
Increase the file system size or add commands to clean up temporary files in the buildspec.
The 'No space left on device' error in CodeBuild occurs when the build environment's ephemeral storage is exhausted. The most effective solution is to either increase the file system size (by using a larger compute type like general1.large which provides more disk space) or add cleanup commands in the buildspec to remove temporary files during the build. This directly addresses the root cause of disk space exhaustion without introducing unnecessary complexity.
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 file system size or add commands to clean up temporary files in the buildspec.
Why this is correct
Cleaning up disk space or using a larger file system resolves the 'No space left' error.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Configure the build to use an Amazon EFS file system to offload data.
Why it's wrong here
EFS provides shared storage but does not increase the local build disk; the build may still use local storage.
- ✗
Switch the build environment to a compute type with more memory, such as general1.large.
Why it's wrong here
More memory does not increase disk space; the error is about disk space.
- ✗
Enable the 'cache' feature in CodeBuild to reuse dependencies and reduce disk usage.
Why it's wrong here
Caching dependencies may reduce download time but does not free up disk space if already filled.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume increasing memory (Option C) or adding a cache (Option D) will resolve disk space issues, but CodeBuild's compute types have fixed disk allocations that do not scale with memory, and caching only reduces download times, not disk usage during a build.
Detailed technical explanation
How to think about this question
CodeBuild uses ephemeral build environments where the disk space is tied to the compute type; general1.medium and general1.large both provide 160 GB of disk space, but larger compute types like general1.xlarge offer more. The buildspec can include commands like 'rm -rf /tmp/*' or 'docker system prune -f' in the pre_build or post_build phases to reclaim space. Under the hood, the build container's filesystem is a layered overlay filesystem, and temporary files from unit tests or dependency downloads can accumulate quickly, especially with large Java projects.
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: Increase the file system size or add commands to clean up temporary files in the buildspec. — The 'No space left on device' error in CodeBuild occurs when the build environment's ephemeral storage is exhausted. The most effective solution is to either increase the file system size (by using a larger compute type like general1.large which provides more disk space) or add cleanup commands in the buildspec to remove temporary files during the build. This directly addresses the root cause of disk space exhaustion without introducing unnecessary complexity.
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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