This DVA-C02 practice question tests your understanding of deployment. 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.
A developer is deploying a new version of a Lambda function using AWS CodeDeploy with a linear canary deployment. The function is part of a serverless application. After the deployment starts, the developer notices that the new version is receiving only 10% of traffic initially, but after 10 minutes, the traffic increases to 100%. What should the developer do to ensure a more gradual traffic shift?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Modify the CodeDeploy deployment configuration to use a linear 10% every 5 minutes instead of canary.
Option D is correct because the developer is using a canary deployment configuration that shifts 10% of traffic immediately and then waits 10 minutes before shifting to 100%. To achieve a more gradual traffic shift, the developer should modify the CodeDeploy deployment configuration to use a linear 10% every 5 minutes, which will increment traffic by 10% every 5 minutes, taking 50 minutes to reach 100%.
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.
✗
Use Lambda function aliases with weighted traffic shifting.
Why it's wrong here
Weighted aliases shift traffic instantly, not gradually over time.
✗
Use multiple Lambda function versions and update the alias gradually.
Why it's wrong here
This is manual and not part of CodeDeploy's automated deployment.
✗
Configure AWS CloudFormation to update the Lambda alias.
Why it's wrong here
CloudFormation does not provide traffic shifting capabilities.
✓
Modify the CodeDeploy deployment configuration to use a linear 10% every 5 minutes instead of canary.
Why this is correct
CodeDeploy linear deployments shift traffic in increments over a specified time, allowing a more gradual shift.
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 may confuse the built-in CodeDeploy deployment configurations (canary vs. linear) with manual alias weight adjustments, thinking that modifying the alias directly is the correct approach instead of changing the deployment configuration.
Detailed technical explanation
How to think about this question
CodeDeploy for Lambda uses deployment configurations like Canary10Percent10Minutes or Linear10PercentEvery5Minutes to control traffic shifting. The canary configuration shifts 10% immediately and waits 10 minutes before a full shift, while the linear configuration increments traffic by 10% every 5 minutes, providing a more gradual transition. This is controlled by the DeploymentConfigName property in the CodeDeploy deployment group, which can be specified in the serverless application's template or via the AWS CLI.
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 cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
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.
Deployment — This question tests Deployment — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Modify the CodeDeploy deployment configuration to use a linear 10% every 5 minutes instead of canary. — Option D is correct because the developer is using a canary deployment configuration that shifts 10% of traffic immediately and then waits 10 minutes before shifting to 100%. To achieve a more gradual traffic shift, the developer should modify the CodeDeploy deployment configuration to use a linear 10% every 5 minutes, which will increment traffic by 10% every 5 minutes, taking 50 minutes to reach 100%.
What should I do if I get this DVA-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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Question Discussion
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