SAP-C02 Design for New Solutions Practice Question
A company is designing a new application that will be deployed on AWS. The application requires a relational database with automatic failover and high availability within a single AWS region. Which database deployment option meets these requirements?
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 RDS Multi-AZ deployment
RDS Multi-AZ provides automatic failover and high availability within a region. Option A is wrong because Single-AZ does not provide failover. Option B is wrong because Read Replicas are for read scaling, not failover. Option D is wrong because cross-region replication is for disaster recovery, not primary failover.
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 RDS Single-AZ deployment
Why it's wrong here
A Single-AZ deployment runs one instance in one Availability Zone with no standby, so an AZ failure causes downtime and no automatic failover occurs. It is tempting as the cheapest RDS option, and it is the correct choice when high availability is explicitly not required.
- ✗
Amazon RDS with Read Replicas
Why it's wrong here
Read Replicas serve read traffic and require manual promotion; they provide no automatic failover of the primary database. Multi-AZ standby does. Read Replicas are tempting because they improve availability for read-heavy workloads, but that is scaling, not automatic failover within a single region.
- ✓
Amazon RDS Multi-AZ deployment
Why this is correct
RDS Multi-AZ maintains a synchronous standby replica in a second Availability Zone within the same region, with automatic DNS failover during an outage. This delivers the required high availability and automatic failover for a relational database without cross-region complexity.
- ✗
Amazon RDS cross-region replication
Why it's wrong here
Cross-region replication copies data to a different region and provides no automatic failover within one region, so it cannot satisfy the single-region availability requirement. It is tempting because it does deliver disaster recovery and read scaling, which is the correct choice when the requirement spans multiple regions.
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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.