SAP-C02 Design for New Solutions Practice Question
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?
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's reserved concurrency of 10 is too low, causing throttling and missed events.
With reserved concurrency set to 10, only 10 Lambda invocations can happen concurrently; if more than 50 uploads occur simultaneously (burst), many events will be throttled and not processed. Option A is incorrect because the job template is configured correctly. Option B is incorrect because S3 event notifications are reliable for Lambda triggers. Option D is incorrect because there is no evidence of timeout issues.
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 MediaConvert job template is not being applied correctly.
Why it's wrong here
The template is configured correctly.
- ✗
The S3 event notification is not guaranteed to deliver events.
Why it's wrong here
S3 event notifications are durable and retried.
- ✓
The Lambda function's reserved concurrency of 10 is too low, causing throttling and missed events.
Why this is correct
With 50 concurrent uploads, only 10 can be processed; the rest are throttled and may be lost.
- ✗
The Lambda function is failing due to a timeout.
Why it's wrong here
There is no indication of timeout; the issue is concurrency.
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 |
Go deeper
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.