← DVA-C02·Amazon Web Services

Question 314 of 1,616

Deployment →mediumMultiple ChoiceObjective-mapped

CloudFormation Lambda Handler Failure

This DVA-C02 practice question tests your understanding of deployment. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.

Network Topology

The exhibit shows the output of the describe-stack-events command for a CloudFormation stack that failed to create. What is the most likely cause of the failure?

Clue words in this question

Noticing these words before you look at the options changes how you read each choice.

Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

Network Topology

A
The Lambda function handler 'index.handler' does not exist in the deployment package.
Correct. The stack event indicates CREATE_FAILED for the Lambda function, which suggests the handler name specified ('index.handler') does not exist in the deployment package.
B
The S3 bucket 'my-bucket' does not contain the object 'my-function.zip'.
Why wrong: Incorrect. The S3 bucket 'my-bucket' and object 'my-function.zip' are correctly provided, so that is not the cause of the failure.
C
The Lambda function code exceeds the maximum allowed size.
Why wrong: Incorrect. There is no indication that the Lambda function code size exceeds the allowed maximum; the failure is due to a missing handler.
D
The IAM role associated with the Lambda function lacks necessary permissions.
Why wrong: Incorrect. The event does not show any permissions errors; the likely cause is a handler mismatch, not a missing IAM role permission.

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

✓

The Lambda function handler 'index.handler' does not exist in the deployment package.

Option A is correct because the stack event shows CREATE_FAILED for the Lambda function resource, which is likely due to the handler 'index.handler' not being present in the deployment package. Option B is incorrect because the S3 bucket and key are correctly specified. Option C is incorrect because there is no evidence of a code size limit issue; the error points to a missing handler. Option D is incorrect because no permission errors are shown; the failure is related to the function code, not the IAM role.

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.

✓
The Lambda function handler 'index.handler' does not exist in the deployment package.
Why this is correct
Correct. The stack event indicates CREATE_FAILED for the Lambda function, which suggests the handler name specified ('index.handler') does not exist in the deployment package.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The S3 bucket 'my-bucket' does not contain the object 'my-function.zip'.
Why it's wrong here
Incorrect. The S3 bucket 'my-bucket' and object 'my-function.zip' are correctly provided, so that is not the cause of the failure.
✗
The Lambda function code exceeds the maximum allowed size.
Why it's wrong here
Incorrect. There is no indication that the Lambda function code size exceeds the allowed maximum; the failure is due to a missing handler.
✗
The IAM role associated with the Lambda function lacks necessary permissions.
Why it's wrong here
Incorrect. The event does not show any permissions errors; the likely cause is a handler mismatch, not a missing IAM role permission.

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.

Trap categories for this question

Command / output trap
Incorrect. The event does not show any permissions errors; the likely cause is a handler mismatch, not a missing IAM role permission.

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 DVA-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 DVA-C02 question test?

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

What is the correct answer to this question?

The correct answer is: The Lambda function handler 'index.handler' does not exist in the deployment package. — Option A is correct because the stack event shows CREATE_FAILED for the Lambda function resource, which is likely due to the handler 'index.handler' not being present in the deployment package. Option B is incorrect because the S3 bucket and key are correctly specified. Option C is incorrect because there is no evidence of a code size limit issue; the error points to a missing handler. Option D is incorrect because no permission errors are shown; the failure is related to the function code, not the IAM role.

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

Are there clue words in this question I should notice?

Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.

What is the key concept behind this question?

Read the scenario before looking for a memorised answer.

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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.