Quick Answer
The answer is Amazon RDS for Oracle because it is the only managed service that provides native Oracle compatibility while supporting read replicas across multiple Availability Zones with minimal operational overhead. When migrating a legacy Oracle database to Amazon RDS for Oracle, the service handles patching, backups, and replication automatically, which directly addresses the requirement to minimize migration effort. On the AWS Certified Solutions Architect Professional SAP-C02 exam, this question tests your ability to distinguish between managed database services and self-managed options, with a common trap being to select DynamoDB for its scalability or RDS for MySQL for its lower cost—both fail because DynamoDB is non-relational and MySQL lacks Oracle compatibility. Another trap is choosing EC2 with self-managed Oracle, which increases administrative burden. Remember the mnemonic “RDS for Oracle: Read replicas, Database compatibility, Simplicity” to quickly recall that this service uniquely combines Oracle support with managed read replicas across AZs.
This SAP-C02 practice question tests your understanding of accelerate workload migration and modernization. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company is migrating a legacy on-premises application to AWS. The application requires a relational database with Oracle compatibility and the ability to run read replicas across multiple Availability Zones. Which AWS service should the company use to minimize migration effort?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "minimum / minimize"
Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Amazon RDS for MySQL
Why wrong: MySQL does not provide Oracle compatibility.
Amazon EC2 with self-managed Oracle
Why wrong: Self-managed Oracle on EC2 increases operational overhead compared to RDS.
Amazon DynamoDB
Why wrong: DynamoDB is a NoSQL database, not relational and does not support Oracle compatibility.
Amazon RDS for Oracle
RDS for Oracle offers managed Oracle database with read replicas across AZs.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Amazon RDS for Oracle
Option C is correct because Amazon RDS for Oracle provides managed Oracle database with read replicas across AZs. Option A is wrong because DynamoDB is NoSQL, not relational. Option B is wrong because RDS for MySQL does not support Oracle compatibility. Option D is wrong because EC2 with self-managed Oracle requires more operational overhead.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Amazon RDS for MySQL
Why it's wrong here
MySQL does not provide Oracle compatibility.
Amazon EC2 with self-managed Oracle
Why it's wrong here
Self-managed Oracle on EC2 increases operational overhead compared to RDS.
Amazon DynamoDB
Why it's wrong here
DynamoDB is a NoSQL database, not relational and does not support Oracle compatibility.
Amazon RDS for Oracle
Why this is correct
RDS for Oracle offers managed Oracle database with read replicas across AZs.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
Common exam traps
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
What to study next
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related SAP-C02 NAT questions on configuration and troubleshooting.
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FAQ
Accelerate Workload Migration and Modernization — This question tests Accelerate Workload Migration and Modernization — Static NAT maps one inside address to one outside address..
The correct answer is: Amazon RDS for Oracle — Option C is correct because Amazon RDS for Oracle provides managed Oracle database with read replicas across AZs. Option A is wrong because DynamoDB is NoSQL, not relational. Option B is wrong because RDS for MySQL does not support Oracle compatibility. Option D is wrong because EC2 with self-managed Oracle requires more operational overhead.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related SAP-C02 NAT questions on configuration and troubleshooting.
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
Static NAT maps one inside address to one outside address.
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Last reviewed: Jun 20, 2026
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