- A
Use AWS Snowball Edge to transfer the database and files. After data is loaded, cut over DNS to AWS.
Why wrong: Snowball is offline; does not minimize downtime during cutover.
- B
Use AWS DMS for continuous replication of the database to Amazon RDS for Oracle. Use AWS DataSync to copy files to Amazon EFS. Then cut over.
Why wrong: EFS is not optimal for image serving; S3 is better.
- C
Use AWS DMS with ongoing replication to Amazon RDS for Oracle. Use S3 Transfer Acceleration to upload files to Amazon S3. Then cut over.
Minimizes downtime, reduces operational overhead, and addresses high latency.
- D
Refactor the application into microservices using Amazon ECS. Use Amazon RDS for Oracle and Amazon S3 for images. Then cut over gradually.
Why wrong: Refactoring during migration increases complexity and risk.
Quick Answer
The answer is to use AWS DMS with ongoing replication to Amazon RDS for Oracle, combined with S3 Transfer Acceleration for the file server. This combination directly satisfies the requirement to migrate a monolithic app to AWS with minimal downtime because DMS’s ongoing replication keeps the on-premises Oracle database synchronized with RDS until the cutover moment, allowing a near-zero downtime switch. RDS for Oracle reduces operational overhead by automating backups, patching, and failover, while S3 Transfer Acceleration overcomes the high I/O latency for the file server by using optimized network paths to upload 5 TB of images to S3. On the AWS Certified Solutions Architect Professional SAP-C02 exam, this scenario tests your ability to balance migration speed with future flexibility—avoiding the trap of refactoring to microservices during the move, which adds risk and complexity. A common memory tip: for monolithic migrations, think “DMS for data, S3 for files, and never refactor during the lift.”
SAP-C02 Practice Question: Accelerate Workload Migration and Modernization
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 monolithic e-commerce platform to AWS. The platform consists of a Java-based web application, an Oracle database, and a file server storing product images. The company's migration requirements are: (1) minimize downtime during cutover, (2) reduce operational overhead for the database, (3) enable future migration to microservices. The current on-premises environment experiences high I/O latency for the file server. The company has already set up a VPN connection to AWS and has installed the AWS Application Discovery Service agent on all servers. During the assessment, you discover that the Oracle database is 2 TB and the file server holds 5 TB of images. The web application is tightly coupled with the database and uses stored procedures. You need to design the migration approach. Which combination of actions should be taken?
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.
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
Use AWS DMS with ongoing replication to Amazon RDS for Oracle. Use S3 Transfer Acceleration to upload files to Amazon S3. Then cut over.
Option C is correct because using AWS DMS with ongoing replication minimizes downtime, RDS for Oracle reduces operational overhead, and S3 with Transfer Acceleration addresses high latency for file transfer. Option A is wrong because Snowball is offline and may cause longer cutover. Option B is wrong because EFS is not the best for image storage; S3 is better. Option D is wrong because refactoring to microservices during migration increases risk and complexity.
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
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use AWS Snowball Edge to transfer the database and files. After data is loaded, cut over DNS to AWS.
Why it's wrong here
Snowball is offline; does not minimize downtime during cutover.
- ✗
Use AWS DMS for continuous replication of the database to Amazon RDS for Oracle. Use AWS DataSync to copy files to Amazon EFS. Then cut over.
Why it's wrong here
EFS is not optimal for image serving; S3 is better.
- ✓
Use AWS DMS with ongoing replication to Amazon RDS for Oracle. Use S3 Transfer Acceleration to upload files to Amazon S3. Then cut over.
Why this is correct
Minimizes downtime, reduces operational overhead, and addresses high latency.
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.
- ✗
Refactor the application into microservices using Amazon ECS. Use Amazon RDS for Oracle and Amazon S3 for images. Then cut over gradually.
Why it's wrong here
Refactoring during migration increases complexity and risk.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
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
How to think about this question
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.
KKey Concepts to Remember
- Static NAT maps one inside address to one outside address.
- PAT allows many inside hosts to share one public address using ports.
- Inside local and inside global describe the private and translated addresses.
- NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
- Identify inside and outside interfaces first.
- Check whether the scenario needs static NAT, dynamic NAT or PAT.
- Do not confuse NAT matching ACLs with normal packet-filtering intent.
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
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Got this wrong? Here's your next step.
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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Accelerate Workload Migration and Modernization — study guide chapter
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Accelerate Workload Migration and Modernization practice questions
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FAQ
Questions learners often ask
What does this SAP-C02 question test?
Accelerate Workload Migration and Modernization — This question tests Accelerate Workload Migration and Modernization — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Use AWS DMS with ongoing replication to Amazon RDS for Oracle. Use S3 Transfer Acceleration to upload files to Amazon S3. Then cut over. — Option C is correct because using AWS DMS with ongoing replication minimizes downtime, RDS for Oracle reduces operational overhead, and S3 with Transfer Acceleration addresses high latency for file transfer. Option A is wrong because Snowball is offline and may cause longer cutover. Option B is wrong because EFS is not the best for image storage; S3 is better. Option D is wrong because refactoring to microservices during migration increases risk and complexity.
What should I do if I get this SAP-C02 question wrong?
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.
Are there clue words in this question I should notice?
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.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Same concept, more angles
2 more ways this is tested on SAP-C02
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A small business is migrating its on-premises infrastructure to AWS. The current environment consists of two VMs running a LAMP stack (Linux, Apache, MySQL, PHP) and a separate file server. The business has limited IT staff and wants to minimize operational overhead. They also want to ensure high availability for the web application. The company has a modest budget and is looking for a cost-effective solution. You need to design the migration. Which approach should be taken?
easy- A.Migrate the VMs to two EC2 instances in an Auto Scaling group behind an ALB. Use RDS for MySQL Multi-AZ.
- B.Use Amazon Lightsail to host the entire application on a single instance with a managed database.
- ✓ C.Use AWS Elastic Beanstalk to deploy the web application. Use Amazon RDS for MySQL Multi-AZ for the database. Use S3 for file storage.
- D.Containerize the application and run on Amazon ECS with Fargate. Use Amazon RDS for MySQL.
Why C: Option B is correct because using Elastic Beanstalk for the web tier and RDS for MySQL provides high availability with minimal management. Option A is wrong because two EC2 instances require more management. Option C is wrong because Lightsail is not highly available. Option D is wrong because ECS Fargate is more complex and costly for a small business.
Variation 2. A retail company is migrating its e-commerce platform from a monolith running on a single on-premises server to AWS. The current application consists of a Java-based web server, a MySQL database, and a caching layer using Redis. The company wants to modernize the architecture by adopting microservices, using serverless where possible, and minimizing operational overhead. The migration must be completed within six months with minimal disruption to ongoing operations. The solutions architect proposes the following initial steps: containerize the Java application and run it on Amazon ECS with Fargate, migrate the MySQL database to Amazon Aurora Serverless v2, and replace Redis with Amazon ElastiCache for Redis Serverless. However, the team is concerned about the complexity of the migration and the potential for downtime. Which recommendation should the solutions architect make to address these concerns?
easy- A.Rewrite the entire application as microservices from scratch and deploy them in a new AWS environment. Cut over all traffic at once after testing.
- B.Use AWS Blue/Green deployment for the monolith to reduce downtime, then migrate to microservices after the deployment is stable.
- ✓ C.Use the Strangler Fig pattern to incrementally replace monolith functionality with microservices, routing traffic to new services as they are built.
- D.Perform a lift-and-shift migration of the monolith to EC2 instances, then gradually refactor into microservices over the next year.
Why C: Option C is correct because the Strangler Fig pattern allows the team to incrementally replace specific functionalities of the monolithic e-commerce platform with microservices, routing traffic to the new services as they are built. This minimizes disruption and downtime by avoiding a big-bang cutover, and it aligns with the goal of modernizing to microservices and serverless within the six-month timeline. The pattern leverages an existing ingress controller (e.g., an Application Load Balancer with path-based routing) to gradually shift requests from the monolith to new services running on Amazon ECS with Fargate, while the database and caching layers are migrated separately with minimal impact.
Last reviewed: Jun 20, 2026
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