SAP-C02 Continuous Improvement for Existing Solutions Practice Question
A company is using AWS Lambda functions to process data from an S3 bucket. Recently, the function has been timing out. The function has a 5-minute timeout configured. What is the most likely cause of the timeout?
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 is processing larger files than before.
The most likely cause of the timeout is that the Lambda function is processing larger files than before, which increases execution time beyond the 5-minute timeout. Option A is incorrect: moving to a different VPC might cause network latency but not necessarily a timeout due to file processing. Option B is incorrect: reserved concurrency controls the number of concurrent executions, not the execution duration of a single invocation. Option C is incorrect: while increasing memory can improve CPU performance and reduce execution time, the immediate cause of a timeout is typically an increase in processing workload, such as larger files. Therefore, option D is correct.
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 was moved to a different VPC.
Why it's wrong here
VPC change alone wouldn't cause timeout without other changes.
- ✗
The Lambda function's reserved concurrency is set too low.
Why it's wrong here
Reserved concurrency affects throughput, not execution time.
- ✗
The Lambda function's memory is too low.
Why it's wrong here
Memory is not directly related to timeout.
- ✓
The Lambda function is processing larger files than before.
Why this is correct
Larger files increase processing time, causing timeout.
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 |
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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.