SAP-C02 Practice Question: Accelerate Workload Migration and Modernization
A company is migrating a web application to AWS. The application uses a three-tier architecture with a web server, application server, and MySQL database. The company wants to ensure high availability by deploying across multiple Availability Zones. The web and application servers are stateless. Which solution provides the HIGHEST availability with the LEAST administrative effort?
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 web and application servers on EC2 instances in an Auto Scaling group across two AZs with an Application Load Balancer. Use Multi-AZ Amazon RDS for MySQL.
Deploying web and application servers on EC2 instances in an Auto Scaling group across two AZs with an Application Load Balancer ensures high availability and automatic scaling. Multi-AZ Amazon RDS for MySQL provides automatic failover for the database, minimizing administrative effort. Option B (deploying in one AZ) does not provide high availability across AZs. Option C (single large instance) is a single point of failure. Option D (using Elastic IPs and Route 53 health checks) requires manual intervention and is less automated than the ALB solution.
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 web and application servers on EC2 instances in an Auto Scaling group across two AZs with an Application Load Balancer. Use Multi-AZ Amazon RDS for MySQL.
Why this is correct
ALB and Auto Scaling provide automatic scaling and failover; Multi-AZ RDS provides database failover.
- ✗
Deploy web and application servers on EC2 instances in an Auto Scaling group in one AZ. Use Amazon Route 53 latency-based routing to another region.
Why it's wrong here
Single AZ is a single point of failure; cross-region adds complexity and latency.
- ✗
Deploy web, application, and database on a single large EC2 instance in one AZ. Take snapshots every hour.
Why it's wrong here
Single AZ does not provide high availability; snapshot recovery takes time.
- ✗
Deploy web and application servers on EC2 instances in two AZs with Elastic IP addresses. Use Amazon Route 53 with health checks to route traffic.
Why it's wrong here
Elastic IPs are not highly available; manual intervention needed for failover.
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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.