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Deployment, Provisioning, and Automation →mediumMultiple ChoiceObjective-mapped

SOA-C02 Deployment, Provisioning, and Automation Practice Question

This SOA-C02 practice question tests your understanding of deployment, provisioning, and 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.

A company is using Lambda functions to process data from an S3 bucket. The SysOps administrator needs to update the Lambda function code with a new version. The administrator wants to ensure that during the deployment, any in-flight requests are completed with the old code, and new requests use the new code. Which deployment strategy should the administrator use?

A
Update the Lambda function code directly using the AWS CLI.
Why wrong: Immediately updates all invocations; no gradual transition.
B
Use AWS CodeDeploy with a canary deployment configuration on the Lambda function.
Why wrong: CodeDeploy can deploy Lambda with canary, but this is still a form of weighted routing via aliases.
C
Create a new Lambda function and update the S3 event notification to trigger the new function.
Why wrong: This is a blue/green approach but requires manual traffic switch; no gradual shift.
D
Create a new Lambda version and update the alias to gradually shift traffic from the old version to the new version using weighted routing.
Weighted routing allows a percentage of traffic to go to the new version while old requests complete.

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

✓

Create a new Lambda version and update the alias to gradually shift traffic from the old version to the new version using weighted routing.

Option D is correct because Lambda aliases support weighted routing, allowing you to gradually shift traffic from the old version to the new version, ensuring in-flight requests complete on the old code. Option A is incorrect because updating the function directly immediately changes all invocations without a transition period. Option B is incorrect because AWS CodeDeploy can deploy to Lambda functions, but the question asks for a strategy that uses native Lambda features; weighted routing via aliases is the simplest and most appropriate method. Option C is incorrect because it creates a new function, which is unnecessary and does not provide gradual traffic shifting.

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.

✗
Update the Lambda function code directly using the AWS CLI.
Why it's wrong here
Immediately updates all invocations; no gradual transition.
✗
Use AWS CodeDeploy with a canary deployment configuration on the Lambda function.
Why it's wrong here
CodeDeploy can deploy Lambda with canary, but this is still a form of weighted routing via aliases.
✗
Create a new Lambda function and update the S3 event notification to trigger the new function.
Why it's wrong here
This is a blue/green approach but requires manual traffic switch; no gradual shift.
✓
Create a new Lambda version and update the alias to gradually shift traffic from the old version to the new version using weighted routing.
Why this is correct
Weighted routing allows a percentage of traffic to go to the new version while old requests complete.
Related concept
Read the scenario before looking for a memorised answer.

Common exam traps

Common exam trap: answer the scenario, not the keyword

Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.

Detailed technical explanation

How to think about this question

This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.

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.
Use explanations to understand the rule behind the answer.

TExam Day Tips

Underline the problem statement mentally.
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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.

Quick reference

AWS S3 Storage Class Comparison

Storage Class	Min Duration	Retrieval	Use Case
S3 Standard	None	Immediate	Frequently accessed data
S3 Standard-IA	30 days	Immediate	Infrequent access, rapid retrieval
S3 One Zone-IA	30 days	Immediate	Non-critical infrequent data
S3 Intelligent-Tiering	None	Immediate–hours	Unknown or changing access patterns
S3 Glacier Instant	90 days	Milliseconds	Archive with instant retrieval
S3 Glacier Flexible	90 days	Minutes–hours	Archive, flexible retrieval
S3 Glacier Deep Archive	180 days	Hours	Long-term compliance archive

What to study next

Got this wrong? Here's your next step.

Identify which SOA-C02 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.

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FAQ

Questions learners often ask

What does this SOA-C02 question test?

Deployment, Provisioning, and Automation — This question tests Deployment, Provisioning, and Automation — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Create a new Lambda version and update the alias to gradually shift traffic from the old version to the new version using weighted routing. — Option D is correct because Lambda aliases support weighted routing, allowing you to gradually shift traffic from the old version to the new version, ensuring in-flight requests complete on the old code. Option A is incorrect because updating the function directly immediately changes all invocations without a transition period. Option B is incorrect because AWS CodeDeploy can deploy to Lambda functions, but the question asks for a strategy that uses native Lambda features; weighted routing via aliases is the simplest and most appropriate method. Option C is incorrect because it creates a new function, which is unnecessary and does not provide gradual traffic shifting.

What should I do if I get this SOA-C02 question wrong?

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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