This DOP-C02 practice question tests your understanding of configuration management and iac. 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 company wants to use AWS Elastic Beanstalk to deploy a web application. They need to ensure that the application can be updated with zero downtime. Which deployment policy should they use?
Immutable
Why wrong: Immutable also provides zero downtime, but the question asks for a specific policy.
All at once
Why wrong: All at once causes downtime.
Rolling
Rolling updates can achieve zero downtime if health checks are used.
Traffic splitting
Why wrong: Traffic splitting is for canary testing.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Rolling
The Rolling deployment policy in AWS Elastic Beanstalk updates instances in batches, replacing a subset of the current environment's instances with new ones while keeping the rest serving traffic. This ensures that the application remains available throughout the update process, achieving zero downtime as long as the health check passes for each batch before proceeding.
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.
Immutable
Why it's wrong here
Immutable also provides zero downtime, but the question asks for a specific policy.
All at once
Why it's wrong here
All at once causes downtime.
Rolling
Why this is correct
Rolling updates can achieve zero downtime if health checks are used.
Related concept
Read the scenario before looking for a memorised answer.
Traffic splitting
Why it's wrong here
Traffic splitting is for canary testing.
Common exam traps
The trap here is that candidates often confuse 'Rolling' with 'Immutable' or 'Traffic splitting' because they all aim for zero downtime, but only Rolling updates instances in-place without creating a full parallel environment, while Immutable incurs a brief CNAME swap delay and Traffic splitting is not a native Elastic Beanstalk deployment policy.
Detailed technical explanation
Under the hood, Elastic Beanstalk's Rolling deployment uses the environment's existing Auto Scaling group and replaces instances in batches, with a configurable batch size (e.g., percentage or fixed number). The deployment pauses between batches to verify health, and if an instance fails, it rolls back the batch, ensuring no traffic is served from unhealthy instances. This approach is ideal for applications that can handle a mix of old and new versions during the update window, but it requires the application to be backward-compatible with the database schema or other shared resources.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
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
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FAQ
Configuration Management and IaC — This question tests Configuration Management and IaC — Read the scenario before looking for a memorised answer..
The correct answer is: Rolling — The Rolling deployment policy in AWS Elastic Beanstalk updates instances in batches, replacing a subset of the current environment's instances with new ones while keeping the rest serving traffic. This ensures that the application remains available throughout the update process, achieving zero downtime as long as the health check passes for each batch before proceeding.
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 24, 2026
This DOP-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 DOP-C02 exam.
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