- A
Rolling update
Why wrong: Rolling update is not a blue/green deployment.
- B
Canary deployment
Why wrong: Canary is not available in Elastic Beanstalk.
- C
Environment URL swap
Swapping URLs between two environments implements blue/green.
- D
Immutable update
Why wrong: Immutable update creates a new ASG but does not swap URLs.
Question 110 of 1,750
DOP-C02 Configuration Management and IaC Practice Question
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 uses AWS Elastic Beanstalk to deploy web applications. The DevOps team wants to implement a blue/green deployment strategy to minimize downtime. Which Elastic Beanstalk feature should be used?
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.
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
✓
Environment URL swap
Option C is correct because Elastic Beanstalk's environment URL swap feature enables blue/green deployment by routing traffic from the current (blue) environment to a new (green) environment via a simple DNS swap. This swap is instantaneous at the DNS level, resulting in zero downtime for users, as the green environment is fully tested before the swap occurs.
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.
- ✗
Rolling update
Why it's wrong here
Rolling update is not a blue/green deployment.
- ✗
Canary deployment
Why it's wrong here
Canary is not available in Elastic Beanstalk.
- ✓
Environment URL swap
Why this is correct
Swapping URLs between two environments implements blue/green.
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.
- ✗
Immutable update
Why it's wrong here
Immutable update creates a new ASG but does not swap URLs.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse 'immutable update' with blue/green deployment, but immutable update still operates within a single environment and does not provide the independent, fully isolated environment that a true blue/green strategy requires.
Detailed technical explanation
How to think about this question
Under the hood, the environment URL swap leverages Amazon Route 53 DNS CNAME records to point the environment's CNAME (e.g., myapp.elasticbeanstalk.com) to the green environment's load balancer. The swap is atomic and typically completes within seconds, but DNS caching by clients may cause a slight delay before all traffic shifts. In practice, teams often pre-warm the green environment's load balancer to avoid cold-start latency during the swap.
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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Configuration Management and IaC — study guide chapter
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FAQ
Questions learners often ask
What does this DOP-C02 question test?
Configuration Management and IaC — This question tests Configuration Management and IaC — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Environment URL swap — Option C is correct because Elastic Beanstalk's environment URL swap feature enables blue/green deployment by routing traffic from the current (blue) environment to a new (green) environment via a simple DNS swap. This swap is instantaneous at the DNS level, resulting in zero downtime for users, as the green environment is fully tested before the swap occurs.
What should I do if I get this DOP-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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Last reviewed: Jul 4, 2026
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