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Design for New Solutions →easyMultiple ChoiceObjective-mapped

SAP-C02 Design for New Solutions Practice Question

This SAP-C02 practice question tests your understanding of design for new solutions. 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 startup is building a serverless photo-sharing application on AWS. Users upload photos via a web app, which stores them in Amazon S3. Each upload triggers an AWS Lambda function that creates a thumbnail and stores it in another S3 bucket. The application is expected to have unpredictable traffic patterns. The startup wants to minimize costs and operational overhead while ensuring the thumbnail generation completes reliably. Which solution should a Solutions Architect recommend?

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
Use Amazon ECS with Fargate to run a container that processes S3 events and generates thumbnails.
Why wrong: Option A (ECS with Fargate) is more complex and expensive than necessary for this simple thumbnail processing task. Lambda is simpler, serverless, and cost-effective.
B
Upload to S3, send a message to an SQS queue, and have a Lambda function poll the queue to generate thumbnails.
Why wrong: Option B adds an unnecessary intermediate service (SQS), increasing latency and complexity without benefit. Direct S3 event notification to Lambda is sufficient.
C
Use an Auto Scaling group of EC2 instances to poll S3 for new uploads and generate thumbnails.
Why wrong: Option C requires managing EC2 instances, which is not serverless, incurs costs even when idle, and requires scaling management.
D
Configure S3 event notifications to invoke a Lambda function directly upon upload to generate thumbnails.
Option D is correct because configuring S3 event notifications to directly invoke a Lambda function upon upload is a serverless, cost-effective solution that scales automatically with traffic, minimizes operational overhead, and ensures reliable thumbnail generation (Lambda retries on failure).

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 S3 event notifications to invoke a Lambda function directly upon upload to generate thumbnails.

Option D is correct because configuring S3 event notifications to directly invoke a Lambda function upon upload is a serverless, cost-effective solution that scales automatically with traffic, minimizes operational overhead, and ensures reliable thumbnail generation (Lambda retries on failure). Option A (ECS with Fargate) is more complex and expensive than necessary for this simple processing task. Option B (SQS queue) adds an unnecessary intermediate service, increasing latency and complexity without benefit. Option C (Auto Scaling EC2) requires managing servers, incurs costs even when idle, and is not serverless.

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.

✗
Use Amazon ECS with Fargate to run a container that processes S3 events and generates thumbnails.
Why it's wrong here
Option A (ECS with Fargate) is more complex and expensive than necessary for this simple thumbnail processing task. Lambda is simpler, serverless, and cost-effective.
✗
Upload to S3, send a message to an SQS queue, and have a Lambda function poll the queue to generate thumbnails.
Why it's wrong here
Option B adds an unnecessary intermediate service (SQS), increasing latency and complexity without benefit. Direct S3 event notification to Lambda is sufficient.
✗
Use an Auto Scaling group of EC2 instances to poll S3 for new uploads and generate thumbnails.
Why it's wrong here
Option C requires managing EC2 instances, which is not serverless, incurs costs even when idle, and requires scaling management.
✓
Configure S3 event notifications to invoke a Lambda function directly upon upload to generate thumbnails.
Why this is correct
Option D is correct because configuring S3 event notifications to directly invoke a Lambda function upon upload is a serverless, cost-effective solution that scales automatically with traffic, minimizes operational overhead, and ensures reliable thumbnail generation (Lambda retries on failure).
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.

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 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.

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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 event notifications to invoke a Lambda function directly upon upload to generate thumbnails. — Option D is correct because configuring S3 event notifications to directly invoke a Lambda function upon upload is a serverless, cost-effective solution that scales automatically with traffic, minimizes operational overhead, and ensures reliable thumbnail generation (Lambda retries on failure). Option A (ECS with Fargate) is more complex and expensive than necessary for this simple processing task. Option B (SQS queue) adds an unnecessary intermediate service, increasing latency and complexity without benefit. Option C (Auto Scaling EC2) requires managing servers, incurs costs even when idle, and is not serverless.

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

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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This SAP-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 SAP-C02 exam.