- A
Change the deployment type to blue/green deployment.
Why wrong: Blue/green would eliminate downtime, but the question asks for in-place configuration.
- B
Set the minimum healthy hosts percentage to 100%.
Why wrong: This ensures all instances are healthy at the end, but during deployment, some instances may be down.
- C
Configure the CodeDeploy deployment group to enable load balancer deregistration and re-registration.
This ensures traffic is routed away from instances being updated, preventing downtime.
- D
Create an Auto Scaling group and configure the deployment to use a rolling update.
Why wrong: Auto Scaling group with rolling update is an alternative, but not required for in-place with ALB.
Question 1,211 of 1,616
DVA-C02 Deployment Practice Question
This DVA-C02 practice question tests your understanding of deployment. 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 developer is deploying a web application on Amazon EC2 instances behind an Application Load Balancer (ALB). The developer uses AWS CodeDeploy to deploy new application versions. The deployment group is configured with an in-place deployment. The developer wants to ensure that the deployment does not cause any downtime. Which additional configuration is required?
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
✓
Configure the CodeDeploy deployment group to enable load balancer deregistration and re-registration.
Option C is correct because in in-place deployments, enabling load balancer deregistration and re-registration allows CodeDeploy to gracefully drain traffic from an instance before deploying the new revision and then re-register it after a successful deployment, preventing downtime. Option A is incorrect because blue/green deployments are an alternative strategy, not required for zero downtime with in-place deployments. Option B is incorrect because setting the minimum healthy hosts to 100% does not handle traffic draining; it only ensures that a minimum number of hosts remain healthy during deployment, which could stall if an instance fails. Option D is incorrect because an Auto Scaling group with rolling updates is not necessary; the deployment can work with existing EC2 instances behind the ALB.
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.
- ✗
Change the deployment type to blue/green deployment.
Why it's wrong here
Blue/green would eliminate downtime, but the question asks for in-place configuration.
- ✗
Set the minimum healthy hosts percentage to 100%.
Why it's wrong here
This ensures all instances are healthy at the end, but during deployment, some instances may be down.
- ✓
Configure the CodeDeploy deployment group to enable load balancer deregistration and re-registration.
Why this is correct
This ensures traffic is routed away from instances being updated, preventing downtime.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Create an Auto Scaling group and configure the deployment to use a rolling update.
Why it's wrong here
Auto Scaling group with rolling update is an alternative, but not required for in-place with ALB.
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.
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.
- →
Deployment — study guide chapter
Learn the concepts, then practise the questions
- →
Deployment practice questions
Targeted practice on this topic area only
- →
All DVA-C02 questions
1,616 questions across all exam domains
- →
AWS Certified Developer Associate DVA-C02 study guide
Full concept coverage aligned to exam objectives
- →
DVA-C02 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Related DVA-C02 practice-question pages
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Development with AWS Services practice questions
Practise DVA-C02 questions linked to Development with AWS Services.
Security practice questions
Practise DVA-C02 questions linked to Security.
Deployment practice questions
Practise DVA-C02 questions linked to Deployment.
Troubleshooting and Optimization practice questions
Practise DVA-C02 questions linked to Troubleshooting and Optimization.
DVA-C02 fundamentals practice questions
Practise DVA-C02 questions linked to DVA-C02 fundamentals.
DVA-C02 scenario practice questions
Practise DVA-C02 questions linked to DVA-C02 scenario.
DVA-C02 troubleshooting practice questions
Practise DVA-C02 questions linked to DVA-C02 troubleshooting.
Practice this exam
Start a free DVA-C02 practice session
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Questions learners often ask
What does this DVA-C02 question test?
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: Configure the CodeDeploy deployment group to enable load balancer deregistration and re-registration. — Option C is correct because in in-place deployments, enabling load balancer deregistration and re-registration allows CodeDeploy to gracefully drain traffic from an instance before deploying the new revision and then re-register it after a successful deployment, preventing downtime. Option A is incorrect because blue/green deployments are an alternative strategy, not required for zero downtime with in-place deployments. Option B is incorrect because setting the minimum healthy hosts to 100% does not handle traffic draining; it only ensures that a minimum number of hosts remain healthy during deployment, which could stall if an instance fails. Option D is incorrect because an Auto Scaling group with rolling updates is not necessary; the deployment can work with existing EC2 instances behind the ALB.
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.
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 →
Keep practising
More DVA-C02 practice questions
- A developer is troubleshooting an AWS Lambda function that is triggered by an S3 event. The function occasionally fails…
- A developer needs to call AWS APIs from application code running on EC2. Which credential source should the AWS SDK use…
- A developer needs to allow an IAM user in a different AWS account to assume a role in the developer's account. The role…
- A developer needs to grant an IAM role in Account B read-only access to objects in an S3 bucket in Account A. The bucket…
- An API Gateway HTTP API should allow access only to users authenticated by an external OIDC provider. Which authorizer t…
- A developer needs to allow an EC2 instance to read from a DynamoDB table. Which is the best practice to grant permission…
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.