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Question 175 of 1,616

Deployment →mediumMultiple ChoiceObjective-mapped

Quick Answer

The answer is traffic splitting, which is the correct deployment policy for this scenario because it enables canary testing by gradually shifting a percentage of incoming traffic from the old application version to the new one, allowing the developer to fully validate the new version before routing all traffic to it. This approach minimizes downtime and aligns perfectly with the requirement to test thoroughly before full rollout, as the new version can be monitored in production with a small user base and rolled back instantly if issues arise. On the AWS Certified Developer Associate DVA-C02 exam, this question tests your understanding of Elastic Beanstalk deployment policies, often contrasting traffic splitting with rolling, immutable, or all-at-once deployments—a common trap is confusing traffic splitting with rolling deployments, but remember that traffic splitting explicitly supports canary testing by letting you control the traffic percentage and duration. A helpful memory tip: think of traffic splitting as a "canary in the coal mine"—you send a small slice of traffic to the new version first to test the waters before committing fully.

DVA-C02 Deployment Practice Question

This DVA-C02 practice question tests your understanding of deployment. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 an application using AWS Elastic Beanstalk with a Docker platform. The developer wants to minimize downtime during deployments and ensure that the new version is fully tested before routing traffic to it. Which deployment policy should the developer choose?

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

Clue: "minimum / minimize"
Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.

Question 1mediummultiple choice

Review the full routing breakdown →

A
All at once.
Why wrong: All-at-once deploys the new version to all instances simultaneously, causing downtime during the deployment. It does not allow testing before full traffic shift.
B
Rolling with additional batch.
Why wrong: This maintains capacity by launching an extra batch, but traffic is still shifted gradually. It does not provide canary testing; all instances eventually run the new version.
C
Immutable.
Why wrong: Immutable deployments launch a new set of instances with the new version and then swap the load balancer target group. Traffic is switched at once, not gradually, so testing before full traffic is limited.
D
Traffic splitting.
Correct. Traffic splitting allows incremental traffic shifting, enabling canary testing. The developer can start with a small percentage, verify, and then increase to 100% with minimal risk.

Full breakdown with real-world context →

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

✓

Traffic splitting.

Traffic splitting (option D) is correct because it allows the developer to gradually shift a percentage of traffic from the old application version to the new version, enabling canary testing. This minimizes downtime by ensuring the new version is fully validated before receiving full traffic, and it aligns with the requirement to test the new version before routing all traffic to it.

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.

✗
All at once.
Why it's wrong here
All-at-once deploys the new version to all instances simultaneously, causing downtime during the deployment. It does not allow testing before full traffic shift.
✗
Rolling with additional batch.
Why it's wrong here
This maintains capacity by launching an extra batch, but traffic is still shifted gradually. It does not provide canary testing; all instances eventually run the new version.
✗
Immutable.
Why it's wrong here
Immutable deployments launch a new set of instances with the new version and then swap the load balancer target group. Traffic is switched at once, not gradually, so testing before full traffic is limited.
✓
Traffic splitting.
Why this is correct
Correct. Traffic splitting allows incremental traffic shifting, enabling canary testing. The developer can start with a small percentage, verify, and then increase to 100% with minimal risk.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
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 often confuse 'Immutable' (blue/green) with canary deployments, but immutable swaps all traffic at once after the new instances are healthy, whereas traffic splitting allows gradual traffic shifting and testing before full cutover.

Detailed technical explanation

How to think about this question

Traffic splitting in Elastic Beanstalk uses a canary deployment model where a specified percentage of traffic (e.g., 10%) is routed to the new version for a defined evaluation period before shifting the rest. Under the hood, Elastic Beanstalk leverages the environment's load balancer to split traffic between the old and new instance groups, allowing real-time monitoring of metrics like latency and error rates. A real-world scenario is when a critical API update must be validated with production traffic without risking a full outage, making traffic splitting ideal for gradual rollouts.

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.

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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: Traffic splitting. — Traffic splitting (option D) is correct because it allows the developer to gradually shift a percentage of traffic from the old application version to the new version, enabling canary testing. This minimizes downtime by ensuring the new version is fully validated before receiving full traffic, and it aligns with the requirement to test the new version before routing all traffic to it.

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.

Are there clue words in this question I should notice?

Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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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.