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 company uses AWS CodePipeline with a multi-branch strategy. Developers push to feature branches, which should trigger a pipeline that runs unit tests and then deploys to a staging environment. However, the pipeline only triggers on the main branch. What should be done to enable pipeline execution for feature branches?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Update the source stage to use 'Webhook' as the change detection method and specify a branch pattern.
Option B is correct because enabling 'Webhook' as the source trigger type and specifying the feature branch pattern allows CodePipeline to start on pushes to those branches. Option A is incorrect because changing the source provider does not affect branch filtering. Option C is incorrect because polling is less efficient and not the recommended approach. Option D is incorrect because a separate pipeline per branch would be overkill.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Change the source provider from Amazon S3 to AWS CodeCommit.
Why it's wrong here
Changing the source provider does not enable branch-specific triggers.
✗
Increase the polling frequency in the source stage to detect new branches.
Why it's wrong here
Polling is inefficient and does not inherently filter by branch.
✗
Create a separate pipeline for each feature branch.
Why it's wrong here
This is unnecessary and increases management overhead.
✓
Update the source stage to use 'Webhook' as the change detection method and specify a branch pattern.
Why this is correct
Webhooks with branch patterns trigger pipelines on pushes to matching branches.
Related concept
Static NAT maps one inside address to one outside address.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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.
What to study next
Got this wrong? Here's your next step.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related DOP-C02 NAT questions on configuration and troubleshooting.
SDLC Automation — This question tests SDLC Automation — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Update the source stage to use 'Webhook' as the change detection method and specify a branch pattern. — Option B is correct because enabling 'Webhook' as the source trigger type and specifying the feature branch pattern allows CodePipeline to start on pushes to those branches. Option A is incorrect because changing the source provider does not affect branch filtering. Option C is incorrect because polling is less efficient and not the recommended approach. Option D is incorrect because a separate pipeline per branch would be overkill.
What should I do if I get this DOP-C02 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related DOP-C02 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Question Discussion
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