The answer is to configure the load balancer deregistration delay and re-registration in the deployment group settings. This feature works by instructing CodeDeploy to first deregister each EC2 instance from the Application Load Balancer, allowing in-flight requests to complete during the deregistration delay period. After the new application version is deployed and the instance passes its health checks, CodeDeploy automatically re-registers it, gradually shifting traffic back to the updated instance. On the SOA-C02 exam, this question tests your understanding that in-place deployments rely on load balancer lifecycle hooks for controlled traffic shifting, not on deployment configurations (which only control speed) or AppSpec hooks (which run scripts). A common trap is confusing a canary deployment—a blue/green strategy—with this in-place feature. Memory tip: think "Deregister, Deploy, Delay, Re-register" for the four Ds of in-place traffic shifting.
SOA-C02 Deployment, Provisioning, and Automation Practice Question
This SOA-C02 practice question tests your understanding of deployment, provisioning, and automation. 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 SysOps administrator is deploying a new version of an application using AWS CodeDeploy with an in-place deployment configuration. The deployment group consists of EC2 instances behind an Application Load Balancer. The administrator wants to ensure that traffic is gradually shifted to the new version. Which CodeDeploy feature should be used?
Why wrong: Canary deployments are used in blue/green deployments, not in-place.
B
Define a BeforeInstall hook to deregister instances.
Why wrong: While possible, the recommended approach is to use the built-in load balancer integration.
C
Use a linear deployment configuration.
Why wrong: Linear deployment configuration sets the percentage of instances to deploy at a time, but traffic shifting is managed by the load balancer settings.
D
Configure the load balancer deregistration delay and re-registration in the deployment group.
CodeDeploy can automatically deregister and re-register instances with the load balancer.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Configure the load balancer deregistration delay and re-registration in the deployment group.
The load balancer deregistration delay and re-registration are configured in the deployment group settings. By enabling load balancing and setting the deregistration delay, CodeDeploy will deregister instances from the load balancer, deploy the new version, and re-register them after a health check. Option C is correct. Option A is wrong because the deployment configuration sets the speed, not traffic shifting. Option B is wrong because the AppSpec file defines hooks, not traffic shifting. Option D is wrong because a canary deployment is a different deployment type, not a feature of in-place.
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 a canary deployment instead of in-place.
Why it's wrong here
Canary deployments are used in blue/green deployments, not in-place.
✗
Define a BeforeInstall hook to deregister instances.
Why it's wrong here
While possible, the recommended approach is to use the built-in load balancer integration.
✗
Use a linear deployment configuration.
Why it's wrong here
Linear deployment configuration sets the percentage of instances to deploy at a time, but traffic shifting is managed by the load balancer settings.
✓
Configure the load balancer deregistration delay and re-registration in the deployment group.
Why this is correct
CodeDeploy can automatically deregister and re-register instances with the load balancer.
Related concept
Read the scenario before looking for a memorised answer.
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 SOA-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, Provisioning, and Automation — This question tests Deployment, Provisioning, and Automation — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Configure the load balancer deregistration delay and re-registration in the deployment group. — The load balancer deregistration delay and re-registration are configured in the deployment group settings. By enabling load balancing and setting the deregistration delay, CodeDeploy will deregister instances from the load balancer, deploy the new version, and re-register them after a health check. Option C is correct. Option A is wrong because the deployment configuration sets the speed, not traffic shifting. Option B is wrong because the AppSpec file defines hooks, not traffic shifting. Option D is wrong because a canary deployment is a different deployment type, not a feature of in-place.
What should I do if I get this SOA-C02 question wrong?
Identify which SOA-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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