DEA-C01 Data Store Management Practice Question
A company is using an Amazon RDS for MySQL database for its e-commerce platform. During a recent flash sale, the database experienced high read traffic, causing slow query performance. The company needs a solution that offloads read traffic with minimal application changes. Which action should be taken?
⚠ Common exam trap
Many candidates choose ElastiCache (Option C) because it is a caching solution, but they overlook the explicit requirement for minimal application changes, which caching typically does not satisfy without code modifications.
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
✓
Create an Amazon RDS read replica in the same region.
Creating an Amazon RDS read replica in the same region offloads read traffic from the primary DB instance by directing read queries to a read-only copy. This requires minimal application changes—only modifying the database connection string to point read queries to the replica endpoint. RDS read replicas use MySQL's native asynchronous replication, making them ideal for scaling read-heavy workloads like flash sales.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Enable DynamoDB Accelerator (DAX) on the RDS instance.
Why it's wrong here
DAX is for DynamoDB, not RDS.
- ✗
Migrate the database to Amazon Aurora and enable Aurora Global Database.
Why it's wrong here
Aurora Global Database is for cross-region replication and disaster recovery, not for read offloading.
- ✗
Implement Amazon ElastiCache for Redis to cache database queries.
Why it's wrong here
ElastiCache requires application changes to implement caching logic.
- ✓
Create an Amazon RDS read replica in the same region.
Why this is correct
Read replicas offload read traffic from the primary instance with minimal application changes.
Go deeper
Related to this question
About these practice questions
This DEA-C01 question is part of Courseiva's 1,711-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DEA-C01 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 DEA-C01 exam.