Question 621 of 1,660
SAP-C02 Practice Question: Accelerate Workload Migration and Modernization
A company is migrating a critical application to AWS using a lift-and-shift approach. The application runs on two on-premises servers: a web server and a database server running SQL Server. The company has deployed the web server on an EC2 instance behind an Application Load Balancer, and the database on an RDS for SQL Server Multi-AZ instance. After migration, users report that the application is noticeably slower compared to on-premises. The application uses a large number of database transactions, and latency between the web server and database has increased. The web server is in us-east-1a, and the RDS primary instance is in us-east-1b. The solutions architect verifies that the application is using the RDS endpoint, not the IP address. What should the architect do to reduce latency?
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
✓
Move the web server EC2 instance to the same Availability Zone as the RDS primary instance.
Colocating the web server and RDS primary in the same Availability Zone minimizes network latency. RDS Multi-AZ automatically manages failover, and the web server should be in the same AZ as the primary to avoid cross-AZ latency. Enabling Multi-AZ on the web server does not help. Using a larger instance does not reduce latency. CloudFront is for content delivery, not database latency.
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 Multi-AZ on the web server EC2 instance.
Why it's wrong here
Multi-AZ is for high availability, not latency reduction.
- ✓
Move the web server EC2 instance to the same Availability Zone as the RDS primary instance.
Why this is correct
Same-AZ placement eliminates cross-AZ network latency.
- ✗
Upgrade the web server EC2 instance to a larger instance type with enhanced networking.
Why it's wrong here
Larger instances improve compute capacity, but not network latency between different AZs.
- ✗
Deploy Amazon CloudFront in front of the web server to cache responses.
Why it's wrong here
CloudFront is for web content delivery, not for reducing database latency.
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Last reviewed: Jun 20, 2026
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.
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