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SDLC Automation →hardMultiple SelectObjective-mapped

DOP-C02 SDLC Automation Practice Question

This DOP-C02 practice question tests your understanding of sdlc automation. 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.

Which THREE factors should be considered when designing a deployment strategy using AWS CodeDeploy to minimize downtime during updates? (Choose three.)

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.

A
Configure a load balancer to deregister instances before deployment.
Deregistering prevents traffic during update.
B
Use a blue/green deployment to switch traffic instantly.
Blue/green allows zero-downtime traffic switching.
C
Use canary deployments to shift traffic gradually.
Canary reduces risk by exposing only a subset of users.
D
Deploy to all instances simultaneously to reduce total time.
Why wrong: Simultaneous deployment can cause downtime if application fails.
E
Use the same instance type for all instances.
Why wrong: Instance type does not affect downtime.

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

✓

Configure a load balancer to deregister instances before deployment.

Option A is correct because deregistering instances from a load balancer before deployment ensures that traffic is not routed to instances that are being updated, preventing downtime during the deployment process. AWS CodeDeploy integrates with Elastic Load Balancing to automatically deregister instances, wait for in-flight requests to complete, and then register them back after the deployment succeeds.

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.

✓
Configure a load balancer to deregister instances before deployment.
Why this is correct
Deregistering prevents traffic during update.
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.
✓
Use a blue/green deployment to switch traffic instantly.
Why this is correct
Blue/green allows zero-downtime traffic switching.
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.
✓
Use canary deployments to shift traffic gradually.
Why this is correct
Canary reduces risk by exposing only a subset of users.
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.
✗
Deploy to all instances simultaneously to reduce total time.
Why it's wrong here
Simultaneous deployment can cause downtime if application fails.
✗
Use the same instance type for all instances.
Why it's wrong here
Instance type does not affect downtime.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates may think deploying to all instances simultaneously (Option D) reduces total time and thus minimizes downtime, but they overlook that without traffic management, this approach can cause complete service interruption during the update window.

Detailed technical explanation

How to think about this question

Blue/green deployments (Option B) work by provisioning a new set of instances (green environment) and switching traffic from the old (blue) environment, often via a load balancer, which can achieve near-zero downtime if the switch is instantaneous. Canary deployments (Option C) shift a small percentage of traffic to the new version first, allowing monitoring for issues before rolling out to the full fleet, which minimizes the blast radius of potential failures. Both strategies rely on traffic routing mechanisms, such as AWS Elastic Load Balancing or Route 53, to control the flow of requests.

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 DOP-C02 question test?

SDLC Automation — This question tests SDLC Automation — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Configure a load balancer to deregister instances before deployment. — Option A is correct because deregistering instances from a load balancer before deployment ensures that traffic is not routed to instances that are being updated, preventing downtime during the deployment process. AWS CodeDeploy integrates with Elastic Load Balancing to automatically deregister instances, wait for in-flight requests to complete, and then register them back after the deployment succeeds.

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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