- A
Amazon S3
S3 can be a source for zip files.
- B
Amazon DynamoDB
Why wrong: DynamoDB is not a supported source.
- C
AWS CodeCommit
CodeCommit is a source repository.
- D
AWS CloudFormation
Why wrong: CloudFormation is a deploy action, not a source.
- E
GitHub (via webhook)
GitHub is supported as a source.
Question 296 of 1,750
Valid Source Actions in AWS CodePipeline (S3, CodeCommit, GitHub)
This DOP-C02 practice question tests your understanding of sdlc automation. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
Which THREE AWS services can be used as a source action in AWS CodePipeline? (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
✓
Amazon S3
Amazon S3 is a supported source action in AWS CodePipeline because you can configure a pipeline to use an S3 bucket as a source location for your application code or artifacts. When you upload a new version of a file to the specified S3 bucket, CodePipeline can automatically detect the change (via Amazon CloudWatch Events or S3 event notifications) and start the pipeline execution. This is commonly used for deploying static websites or integrating with third-party CI/CD tools that output artifacts to S3.
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.
- ✓
Amazon S3
Why this is correct
S3 can be a source for zip files.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Amazon DynamoDB
Why it's wrong here
DynamoDB is not a supported source.
- ✓
AWS CodeCommit
Why this is correct
CodeCommit is a source repository.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
AWS CloudFormation
Why it's wrong here
CloudFormation is a deploy action, not a source.
- ✓
GitHub (via webhook)
Why this is correct
GitHub is supported as a source.
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 services that can be used as source actions (where code/artifacts originate) with services that can be used as deploy or test actions, leading them to incorrectly select CloudFormation (a deploy action) or DynamoDB (a database service) as source options.
Detailed technical explanation
How to think about this question
Under the hood, CodePipeline source actions rely on polling or event-driven triggers (e.g., Amazon CloudWatch Events for S3, CodeCommit, or GitHub webhooks) to detect changes. For S3, you must enable versioning on the bucket and configure a CloudWatch Events rule that listens for `PutObject` events on the specific object key path. For CodeCommit, the pipeline uses a CloudWatch Events rule triggered by repository state changes, while GitHub uses a webhook that posts to a CodePipeline endpoint. The pipeline then fetches the source artifact and passes it to subsequent stages.
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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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: Amazon S3 — Amazon S3 is a supported source action in AWS CodePipeline because you can configure a pipeline to use an S3 bucket as a source location for your application code or artifacts. When you upload a new version of a file to the specified S3 bucket, CodePipeline can automatically detect the change (via Amazon CloudWatch Events or S3 event notifications) and start the pipeline execution. This is commonly used for deploying static websites or integrating with third-party CI/CD tools that output artifacts to S3.
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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
1 more ways this is tested on DOP-C02
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Which TWO AWS services can be used as source actions in AWS CodePipeline to automatically trigger a pipeline when changes are made? (Choose two.)
easy- A.Amazon CloudWatch
- ✓ B.Amazon S3
- C.Amazon EC2
- D.AWS CloudFormation
- ✓ E.AWS CodeCommit
Why B: Amazon S3 is a valid source action in AWS CodePipeline because you can configure a pipeline to start when a new object is created or an existing object is updated in an S3 bucket. This is achieved by enabling Amazon S3 event notifications (via Amazon S3 Event Notifications) that send events to Amazon CloudWatch Events or directly to AWS CodePipeline using a CloudWatch Events rule, which then triggers the pipeline execution. This allows automatic pipeline runs on code or artifact changes stored in S3.
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Last reviewed: Jul 4, 2026
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