SAP-C02 Practice Question: Accelerate Workload Migration and Modernization
A company wants to modernize a legacy monolithic application by decomposing it into microservices. The application handles HTTP requests and uses a MySQL database. The company needs to decouple the microservices and improve scalability. Which AWS services should be used?
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
✓
Amazon SQS for decoupling and Amazon Aurora MySQL for data.
Amazon SQS provides a reliable message queue for decoupling microservices, and Amazon Aurora MySQL offers a scalable, MySQL-compatible database for persistent data. Option B (S3) is incorrect because S3 is an object storage service, not a decoupling mechanism. Option C (DynamoDB) is incorrect because although SQS for decoupling is fine, DynamoDB is a NoSQL database, not a relational database like MySQL, and the question specifies MySQL. Option D (Kinesis Data Streams) is incorrect because Kinesis is designed for real-time data streaming, not for general-purpose decoupling of microservices.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Amazon SQS for decoupling and Amazon Aurora MySQL for data.
Why this is correct
SQS provides message queuing for decoupling; Aurora is MySQL-compatible and scalable.
- ✗
Amazon S3 for decoupling and Amazon RDS for MySQL.
Why it's wrong here
S3 is object storage, not a message queue for decoupling.
- ✗
Amazon SQS for decoupling and Amazon DynamoDB for data.
Why it's wrong here
DynamoDB is NoSQL, not compatible with MySQL application logic.
- ✗
Amazon Kinesis Data Streams for decoupling and Amazon RDS for MySQL.
Why it's wrong here
Kinesis is for large-scale streaming, not standard request/response decoupling.
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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Same concept, more angles
1 more way 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 company is migrating a three-tier web application to AWS and wants to decouple the layers for scalability. Which THREE AWS services should they use?
medium- ✓ A.Application Load Balancer (ALB)
- ✓ B.Amazon Simple Queue Service (SQS)
- ✓ C.Amazon RDS
- D.Amazon CloudFront
- E.Amazon ElastiCache
Why A: Options A, B, and C are correct. ALB for web tier, SQS for decoupling, and RDS for database. Option D (CloudFront) is a CDN, not for decoupling. Option E (ElastiCache) is optional caching.
JA
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.