- A
Use AWS CodeDeploy with a canary deployment configuration
Correct: Canary deployments shift a small percentage of traffic to the new version and allow monitoring before full rollout, enabling quick rollback if errors are detected.
- B
Use an EC2 rolling update strategy
Why wrong: Incorrect: Rolling updates are designed for EC2 instances, not Lambda functions. Lambda does not support rolling updates.
- C
Use AWS CodeDeploy with a linear deployment configuration
Why wrong: Incorrect: Linear deployments shift traffic in fixed increments but do not have automatic rollback capabilities on error detection.
- D
Use an immutable update strategy
Why wrong: Incorrect: Immutable updates replace all instances at once and do not support gradual traffic shifting or automatic rollback.
DVA-C02 Troubleshooting and Optimization Practice Question
This DVA-C02 practice question tests your understanding of troubleshooting and optimization. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 and wants to roll back immediately if errors are detected. Which deployment strategy should the developer use?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"immediately / without restart"Why it matters: Time or reboot constraint — the correct answer must take effect right away without requiring a reboot or reload.
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
Use AWS CodeDeploy with a canary deployment configuration
Option A is correct because canary deployments allow shifting a small percentage of traffic to the new version and monitoring before full rollout. Option B is wrong because rolling updates are for EC2 instances, not Lambda functions. Option C is wrong because linear deployments shift traffic in increments but do not have automatic rollback. Option D is wrong because immutable updates replace all instances and do not support gradual traffic shifting.
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 AWS CodeDeploy with a canary deployment configuration
Why this is correct
Correct: Canary deployments shift a small percentage of traffic to the new version and allow monitoring before full rollout, enabling quick rollback if errors are detected.
Clue confirmation
The clue word "immediately / without restart" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Use an EC2 rolling update strategy
Why it's wrong here
Incorrect: Rolling updates are designed for EC2 instances, not Lambda functions. Lambda does not support rolling updates.
- ✗
Use AWS CodeDeploy with a linear deployment configuration
Why it's wrong here
Incorrect: Linear deployments shift traffic in fixed increments but do not have automatic rollback capabilities on error detection.
- ✗
Use an immutable update strategy
Why it's wrong here
Incorrect: Immutable updates replace all instances at once and do not support gradual traffic shifting or automatic rollback.
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 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.
Quick reference
Cloud Service Model Comparison
| Model | You Manage | Provider Manages | Examples |
|---|---|---|---|
| IaaS | OS, runtime, apps, data | Hardware, hypervisor, networking | EC2, Azure VMs, GCP Compute Engine |
| PaaS | Apps and data | OS, runtime, middleware, hardware | Elastic Beanstalk, Azure App Service |
| SaaS | Data and settings only | Everything else | Microsoft 365, Salesforce, Workday |
| FaaS / Serverless | Function code only | Infra, scaling, runtime | Lambda, Azure Functions, Cloud Run |
| CaaS | Containers and apps | Kubernetes, OS, hardware | EKS, AKS, GKE |
What to study next
Got this wrong? Here's your next step.
Identify which DVA-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.
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Troubleshooting and Optimization — study guide chapter
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FAQ
Questions learners often ask
What does this DVA-C02 question test?
Troubleshooting and Optimization — This question tests Troubleshooting and Optimization — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use AWS CodeDeploy with a canary deployment configuration — Option A is correct because canary deployments allow shifting a small percentage of traffic to the new version and monitoring before full rollout. Option B is wrong because rolling updates are for EC2 instances, not Lambda functions. Option C is wrong because linear deployments shift traffic in increments but do not have automatic rollback. Option D is wrong because immutable updates replace all instances and do not support gradual traffic shifting.
What should I do if I get this DVA-C02 question wrong?
Identify which DVA-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.
Are there clue words in this question I should notice?
Yes — watch for: "immediately / without restart". Time or reboot constraint — the correct answer must take effect right away without requiring a reboot or reload.
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 →
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Last reviewed: Jun 20, 2026
This DVA-C02 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DVA-C02 exam.
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