The correct action is to configure a "Wait for Environment to be Ready" action before the deploy stage in CodePipeline. This directly addresses the root cause of the failure by introducing a gate that checks the Elastic Beanstalk environment’s status—preventing the pipeline from proceeding if the environment is still in an "Updating" state from a prior deployment. On the AWS Certified DevOps Engineer Professional DOP-C02 exam, this scenario tests your understanding of deployment orchestration and state management, often appearing as a trap where candidates mistakenly increase timeouts or add complexity with multiple environments. The key insight is that concurrent deployments are a pipeline sequencing issue, not a configuration or scaling problem. Remember the memory tip: "Gate before state—don’t deploy to a moving target." This ensures the environment is ready before any new deployment begins, avoiding the "Environment Not Ready" error entirely.
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 CodePipeline to deploy a web application to an Elastic Beanstalk environment. The pipeline has a source stage (S3), a build stage (CodeBuild), and a deploy stage (Elastic Beanstalk). Recently, the deployment started failing with the error 'The Elastic Beanstalk environment is not in a ready state'. The team found that the environment was in an 'Updating' state because a previous deployment was still in progress. They need a solution that prevents concurrent deployments and ensures that the environment is ready before starting a new deployment. Which action should the DevOps engineer take?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure a 'Wait for Environment to be Ready' action before the deploy stage
To prevent concurrent deployments, configure the pipeline with a concurrency limit or use a stage that checks the environment status before proceeding. The simplest solution is to set the Elastic Beanstalk environment's 'Rolling update type' to 'Immutable' and use a manual approval gate, but the best practice is to use a CodePipeline action that waits for the environment to be ready. Option A is correct. Option B (increase timeout) does not prevent concurrent deployments. Option C (multiple environments) adds complexity. Option D (disable rolling updates) may cause downtime.
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 deployment timeout in the Elastic Beanstalk environment
Why it's wrong here
Longer timeout does not prevent starting a new deployment while another is running
✗
Disable rolling updates in the Elastic Beanstalk environment
Why it's wrong here
Disabling rolling updates may cause downtime and does not prevent concurrency
✓
Configure a 'Wait for Environment to be Ready' action before the deploy stage
Why this is correct
This action checks the environment status and waits until it's ready
Related concept
Read the scenario before looking for a memorised answer.
✗
Create multiple Elastic Beanstalk environments for blue/green deployment
Why it's wrong here
Multiple environments add cost and management overhead
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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.
What to study next
Got this wrong? Here's your next step.
Identify which DOP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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: Configure a 'Wait for Environment to be Ready' action before the deploy stage — To prevent concurrent deployments, configure the pipeline with a concurrency limit or use a stage that checks the environment status before proceeding. The simplest solution is to set the Elastic Beanstalk environment's 'Rolling update type' to 'Immutable' and use a manual approval gate, but the best practice is to use a CodePipeline action that waits for the environment to be ready. Option A is correct. Option B (increase timeout) does not prevent concurrent deployments. Option C (multiple environments) adds complexity. Option D (disable rolling updates) may cause downtime.
What should I do if I get this DOP-C02 question wrong?
Identify which DOP-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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