- A
AWS CodeDeploy
Why wrong: CodeDeploy is a deployment service, but not essential if using other methods.
- B
Artifact storage
Build artifacts need to be stored for deployment.
- C
Amazon CloudWatch
Why wrong: CloudWatch is for monitoring, not a pipeline component.
- D
Build and test automation
Automated building and testing is a core CI/CD component.
- E
Source control repository
Source code needs to be stored and versioned.
Question 685 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 DevOps team is designing a CI/CD pipeline for a containerized application. Which THREE components are essential for a complete pipeline? (Choose three.)
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
✓
Artifact storage
Artifact storage (Option B) is essential because a complete CI/CD pipeline must store build outputs (e.g., Docker images, JAR files) in a durable, versioned repository. Without artifact storage, subsequent deployment stages cannot reliably retrieve the exact build artifact that passed testing, breaking traceability and rollback capabilities. Services like Amazon ECR or S3 serve this role, ensuring immutability and consistent delivery across environments.
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.
- ✗
AWS CodeDeploy
Why it's wrong here
CodeDeploy is a deployment service, but not essential if using other methods.
- ✓
Artifact storage
Why this is correct
Build artifacts need to be stored for deployment.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Amazon CloudWatch
Why it's wrong here
CloudWatch is for monitoring, not a pipeline component.
- ✓
Build and test automation
Why this is correct
Automated building and testing is a core CI/CD component.
Related concept
Read the scenario before looking for a memorised answer.
- ✓
Source control repository
Why this is correct
Source code needs to be stored and versioned.
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 confuse 'deployment service' (CodeDeploy) with a pipeline component, or mistake monitoring (CloudWatch) as essential, when the question specifically asks for the three core stages that form a complete pipeline: source, build/test, and artifact storage.
Detailed technical explanation
How to think about this question
Under the hood, artifact storage relies on content-addressable storage (e.g., Docker image digests via SHA256) to guarantee immutability. In a real-world scenario, if a pipeline skips artifact storage and rebuilds from source at deploy time, a dependency version change could silently alter the deployed artifact, breaking the principle of 'build once, deploy many'. AWS CodePipeline integrates with S3 as the default artifact store, using bucket policies and versioning to enforce this immutability.
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.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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SDLC Automation — study guide chapter
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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: Artifact storage — Artifact storage (Option B) is essential because a complete CI/CD pipeline must store build outputs (e.g., Docker images, JAR files) in a durable, versioned repository. Without artifact storage, subsequent deployment stages cannot reliably retrieve the exact build artifact that passed testing, breaking traceability and rollback capabilities. Services like Amazon ECR or S3 serve this role, ensuring immutability and consistent delivery across environments.
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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