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.
An Elastic Beanstalk deployment must avoid downtime and create a full new set of instances before swapping traffic, accepting higher temporary cost. Which policy fits?
All at once
Why wrong: This does not meet the stated requirement as directly as the correct option.
Rolling
Why wrong: This does not meet the stated requirement as directly as the correct option.
Immutable
Correct for the stated requirement.
Traffic splitting disabled
Why wrong: This does not meet the stated requirement as directly as the correct option.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Immutable
Immutable deployment is correct because it creates a fully new set of instances in a separate Auto Scaling group, then swaps the Elastic Load Balancer (ELB) traffic to the new environment in a single atomic action. This ensures zero downtime and a complete rollback capability by simply reverting to the old environment, at the cost of running double the instances temporarily.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
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
This does not meet the stated requirement as directly as the correct option.
Rolling
Why it's wrong here
This does not meet the stated requirement as directly as the correct option.
Immutable
Why this is correct
Correct for the stated requirement.
Related concept
Read the scenario before looking for a memorised answer.
Traffic splitting disabled
Why it's wrong here
This does not meet the stated requirement as directly as the correct option.
Common exam traps
The trap here is that candidates confuse 'Rolling' with 'Immutable' because both avoid downtime, but Rolling modifies existing instances in batches and does not create a full parallel environment, whereas Immutable creates a completely separate fleet before the traffic switch.
Detailed technical explanation
Under the hood, immutable deployment leverages Elastic Beanstalk's ability to provision a separate Auto Scaling group with the new application version, attach it to the same ELB target group but with zero weight initially, then perform a DNS or listener rule swap to shift 100% traffic to the new group. This approach is ideal for critical production workloads where even brief downtime is unacceptable, and it ensures that if the new environment fails health checks, the old environment remains untouched and can be instantly restored.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
What to study next
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FAQ
Deployment — This question tests Deployment — Read the scenario before looking for a memorised answer..
The correct answer is: Immutable — Immutable deployment is correct because it creates a fully new set of instances in a separate Auto Scaling group, then swaps the Elastic Load Balancer (ELB) traffic to the new environment in a single atomic action. This ensures zero downtime and a complete rollback capability by simply reverting to the old environment, at the cost of running double the instances temporarily.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 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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