Question 1,351 of 1,746
Design for New SolutionsmediumMultiple SelectObjective-mapped

Quick Answer

The answer is to set the Lambda function timeout to 15 minutes and use S3 event notifications to trigger Lambda directly. This configuration works because Lambda’s maximum execution timeout is exactly 15 minutes, matching the processing requirement, and S3 event notifications pass only metadata—not the 1GB file itself—so the 128KB payload limit is irrelevant; Lambda reads the file from S3 via the SDK. On the AWS Certified Solutions Architect Professional SAP-C02 exam, this question tests your understanding of Lambda’s hard limits and the decoupled nature of S3 event-driven architectures, with a common trap being confusion over payload size versus file size. Remember that S3 events are triggers, not data carriers—the file stays in the bucket, and Lambda fetches it. Memory tip: “15 minutes max, metadata only—S3 events don’t carry the payload.”

SAP-C02 Design for New Solutions Practice Question

This SAP-C02 practice question tests your understanding of design for new solutions. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 designing a new serverless application using AWS Lambda. The application must process files uploaded to an S3 bucket. Each file can be up to 1 GB in size. The processing time for each file is expected to be up to 15 minutes. The company wants to minimize cost and operational overhead. Which TWO configuration choices should the company make? (Choose TWO.)

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.

Question 1mediummulti select
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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 S3 to send event notifications to the Lambda function.

The correct answers are A and C. Option A is correct because Lambda's maximum execution timeout is 15 minutes, which meets the processing time requirement. Option C is correct because using S3 event notifications to invoke Lambda directly is a simple, cost-effective integration. Option B is wrong because Lambda has a maximum payload size of 128 KB for synchronous invocation, but for S3 events, the payload size limit is 128 KB; however, the file itself is stored in S3, and Lambda reads it using the S3 API, so the 1 GB file is not passed as an event payload. The event notification contains only metadata. Option D is wrong because Lambda does not support mounting EFS by default in all regions; it requires a VPC configuration and is not needed here. Option E is wrong because extending Lambda timeout to 30 minutes is not possible as the maximum is 15 minutes.

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.

  • Mount an Amazon EFS file system to the Lambda function for temporary storage.

    Why it's wrong here

    EFS is not required for this use case. Lambda can read from S3 directly. EFS adds complexity and cost.

  • Use S3 event notifications to send the file content directly to Lambda.

    Why it's wrong here

    S3 event notifications send only metadata (bucket name, object key) to Lambda. Lambda reads the file from S3 using the S3 API, so the file content is not sent in the event.

  • Extend the Lambda function timeout to 30 minutes.

    Why it's wrong here

    Lambda's maximum timeout is 15 minutes, so a 30-minute timeout is not possible.

  • Configure S3 to send event notifications to the Lambda function.

    Why this is correct

    S3 can trigger Lambda directly via event notifications when a new object is created, which is a simple and cost-effective integration.

    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.

  • Set the Lambda function timeout to 15 minutes.

    Why this is correct

    Lambda supports up to 15 minutes of execution time, which covers the expected processing time.

    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.

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 startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.

What to study next

Got this wrong? Here's your next step.

Identify which SAP-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.

Related practice questions

Related SAP-C02 practice-question pages

Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.

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FAQ

Questions learners often ask

What does this SAP-C02 question test?

Design for New Solutions — This question tests Design for New Solutions — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Configure S3 to send event notifications to the Lambda function. — The correct answers are A and C. Option A is correct because Lambda's maximum execution timeout is 15 minutes, which meets the processing time requirement. Option C is correct because using S3 event notifications to invoke Lambda directly is a simple, cost-effective integration. Option B is wrong because Lambda has a maximum payload size of 128 KB for synchronous invocation, but for S3 events, the payload size limit is 128 KB; however, the file itself is stored in S3, and Lambda reads it using the S3 API, so the 1 GB file is not passed as an event payload. The event notification contains only metadata. Option D is wrong because Lambda does not support mounting EFS by default in all regions; it requires a VPC configuration and is not needed here. Option E is wrong because extending Lambda timeout to 30 minutes is not possible as the maximum is 15 minutes.

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

Identify which SAP-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.

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: Jun 20, 2026

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