DBS-C01 Deployment and Migration Practice Question
A company wants to deploy an Amazon RDS for MySQL database for a new application. The database must be highly available with automatic failover. Which configuration should they choose?
⚠ Common exam trap
It's easy for candidates to confuse read replicas with Multi-AZ standby replicas, assuming that a read replica can provide automatic failover, but read replicas require manual promotion and may have data loss due to asynchronous replication.
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
✓
Deploy a Multi-AZ instance with a standby replica
A Multi-AZ deployment for Amazon RDS automatically provisions and maintains a synchronous standby replica in a different Availability Zone. In the event of a failure, Amazon RDS automatically fails over to the standby, providing high availability without manual intervention. This configuration meets the requirement for automatic failover and high availability.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Deploy a single-AZ instance with automated backups
Why it's wrong here
Automated backups do not provide automatic failover.
- ✗
Deploy a cross-region replica
Why it's wrong here
Cross-region replicas are for disaster recovery, not automatic failover in the same region.
- ✗
Deploy a single-AZ instance with a read replica
Why it's wrong here
Read replicas do not provide automatic failover.
- ✓
Deploy a Multi-AZ instance with a standby replica
Why this is correct
Multi-AZ provides automatic failover to the standby.
Go deeper
Related to this question
About these practice questions
This DBS-C01 question is part of Courseiva's 1,663-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 DBS-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 DBS-C01 exam.