SAP-C02 Continuous Improvement for Existing Solutions Practice Question
A company wants to reduce costs for its Amazon RDS for MySQL database without affecting performance. The database is used by a read-intensive application. Which action should the company take?
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
✓
Implement a Read Replica and direct read traffic to it.
Implementing a Read Replica allows offloading read traffic from the primary DB instance. This reduces the load on the primary, potentially enabling the use of a smaller instance size or lowering provisioned IOPS, thereby reducing costs without affecting performance for the read-intensive application. Option A is incorrect because Multi-AZ deployment adds a standby instance and synchronous replication, increasing costs without direct performance benefit. Option B is incorrect; upgrading to the latest generation instance type may improve performance but generally does not reduce costs. Option D is incorrect; purchasing Reserved Instances provides a discount on hourly rates but does not address the utilization or instance size, so it does not directly reduce costs based on workload.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Change the DB instance to a Multi-AZ deployment.
Why it's wrong here
Multi-AZ increases cost and is for high availability, not cost reduction.
- ✗
Upgrade to the latest generation instance type.
Why it's wrong here
Newer instances may be more expensive per hour.
- ✓
Implement a Read Replica and direct read traffic to it.
Why this is correct
Offloads reads, enabling a smaller primary instance to handle writes.
- ✗
Purchase Reserved Instances for the database.
Why it's wrong here
Reserved Instances provide discounts but do not reduce the instance size needed.
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Written by Johnson Ajibi, MSc IT Security
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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.