- A
Configure S3 event notifications to invoke Lambda directly and use a dead-letter queue to capture failed events.
Why wrong: Direct invocation can cause throttling if many files are uploaded simultaneously; DLQ captures failures but does not handle timeout gracefully.
- B
Use AWS Step Functions to orchestrate the transcoding workflow, with each step as a separate Lambda function.
Why wrong: Step Functions adds orchestration but does not inherently handle Lambda timeouts; it can add retry logic but increases cost and complexity.
- C
Configure S3 event notifications to send messages to an Amazon SQS queue. Have Lambda poll the queue and process each message. Set the SQS visibility timeout to match the expected maximum processing time.
SQS decouples the trigger from processing, allowing Lambda to poll at its own pace; visibility timeout ensures messages are reprocessed if Lambda times out or fails.
- D
Use Amazon Kinesis Data Streams to ingest S3 events and have Lambda process records from the stream.
Why wrong: Kinesis is designed for streaming data, not for event-driven file processing; it introduces additional cost and complexity.
Quick Answer
The correct choice is to configure S3 event notifications to send messages to an SQS queue, with Lambda polling the queue and the SQS visibility timeout set to match the expected maximum processing time. This decoupled video transcoding pipeline with Lambda and SQS handles timeouts because if a Lambda invocation reaches its execution timeout, the message is not deleted from the queue; after the visibility timeout expires, the message reappears for another processing attempt, ensuring all videos are eventually transcoded. On the AWS Certified Solutions Architect Professional SAP-C02 exam, this scenario tests your understanding of decoupling patterns and the trade-offs between synchronous and asynchronous processing—a common trap is choosing direct S3-to-Lambda invocation, which can lead to throttling and lost messages on timeout. Remember the key insight: SQS visibility timeout acts as a built-in retry mechanism for Lambda timeouts, making it the cost-effective, resilient choice without needing Step Functions or Kinesis. Memory tip: “Visibility timeout = Lambda’s second chance.”
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 media company is designing a video transcoding pipeline using AWS Lambda and Amazon S3. The pipeline must process videos uploaded to an S3 bucket, transcode them into multiple formats, and store the results in another S3 bucket. The processing time for each video can vary from a few seconds to several minutes. Which architecture will minimize cost and ensure all videos are processed, even if Lambda execution timeout is reached?
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.
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 send messages to an Amazon SQS queue. Have Lambda poll the queue and process each message. Set the SQS visibility timeout to match the expected maximum processing time.
Option B is correct because S3 event notifications to SQS, with Lambda polling the queue, decouples the process and allows Lambda to process messages at its own pace; if a timeout occurs, the message becomes visible again after the visibility timeout. Option A is wrong because direct Lambda invocation via S3 events can cause concurrent invocations to be throttled; DLQ alone does not handle timeouts. Option C is wrong because Step Functions adds cost and complexity. Option D is wrong because Kinesis is overkill and streaming is not needed.
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 S3 event notifications to invoke Lambda directly and use a dead-letter queue to capture failed events.
Why it's wrong here
Direct invocation can cause throttling if many files are uploaded simultaneously; DLQ captures failures but does not handle timeout gracefully.
- ✗
Use AWS Step Functions to orchestrate the transcoding workflow, with each step as a separate Lambda function.
Why it's wrong here
Step Functions adds orchestration but does not inherently handle Lambda timeouts; it can add retry logic but increases cost and complexity.
- ✓
Configure S3 event notifications to send messages to an Amazon SQS queue. Have Lambda poll the queue and process each message. Set the SQS visibility timeout to match the expected maximum processing time.
Why this is correct
SQS decouples the trigger from processing, allowing Lambda to poll at its own pace; visibility timeout ensures messages are reprocessed if Lambda times out or fails.
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 Amazon Kinesis Data Streams to ingest S3 events and have Lambda process records from the stream.
Why it's wrong here
Kinesis is designed for streaming data, not for event-driven file processing; it introduces additional cost and complexity.
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.
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Design for New Solutions — study guide chapter
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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 send messages to an Amazon SQS queue. Have Lambda poll the queue and process each message. Set the SQS visibility timeout to match the expected maximum processing time. — Option B is correct because S3 event notifications to SQS, with Lambda polling the queue, decouples the process and allows Lambda to process messages at its own pace; if a timeout occurs, the message becomes visible again after the visibility timeout. Option A is wrong because direct Lambda invocation via S3 events can cause concurrent invocations to be throttled; DLQ alone does not handle timeouts. Option C is wrong because Step Functions adds cost and complexity. Option D is wrong because Kinesis is overkill and streaming is not needed.
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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
1 more ways this is tested on SAP-C02
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A media company is designing a new video processing pipeline on AWS. Videos are uploaded to an S3 bucket, which triggers an AWS Lambda function to start an AWS Elemental MediaConvert job. The MediaConvert job uses a custom job template. The pipeline must handle bursty uploads of up to 50 videos simultaneously. The company has noticed that some uploads are not being processed. The Lambda function is configured with a reserved concurrency of 10. The S3 event notification is configured to send events to the Lambda function. The MediaConvert job template is configured correctly. What is the most likely reason for the missed processing?
hard- A.The MediaConvert job template is not being applied correctly.
- B.The S3 event notification is not guaranteed to deliver events.
- ✓ C.The Lambda function's reserved concurrency of 10 is too low, causing throttling and missed events.
- D.The Lambda function is failing due to a timeout.
Why C: Option A is correct. With reserved concurrency set to 10, only 10 Lambda invocations can happen concurrently; if more than 10 uploads occur simultaneously, the remaining events will be throttled. Option B is wrong because event notifications are reliable. Option C is wrong because there is no information about errors. Option D is wrong because the template is correct.
Last reviewed: Jun 20, 2026
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.
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