Quick Answer
The correct answer is AWS Schema Conversion Tool (AWS SCT) and AWS Database Migration Service (AWS DMS). For a 500 GB MySQL migration with minimal downtime, DMS handles the heavy lifting of continuous data replication from the source to Amazon RDS for MySQL, while SCT assesses and converts any schema objects—such as indexes or stored procedures—that may have compatibility issues, even in a homogeneous migration. On the AWS Certified Database Specialty DBS-C01 exam, this pairing tests your understanding of how to achieve near-zero downtime migrations using ongoing replication, a key scenario for the “Migration and Management” domain. A common trap is assuming DMS alone is always sufficient for homogeneous migrations; however, SCT is still recommended to validate and optimize the schema for RDS, especially with large databases. Remember the mnemonic “DMS moves data, SCT smooths the schema” to recall that both services work together for a seamless, low-downtime migration.
This DBS-C01 practice question tests your understanding of deployment and migration. 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 an on-premises MySQL database to Amazon RDS for MySQL. The database is 500 GB and the migration must have minimal downtime. Which TWO AWS services should be used together to accomplish this?
AWS App2Container
Why wrong: App2Container is for containerizing applications.
AWS CloudFormation
Why wrong: CloudFormation is for infrastructure provisioning.
AWS DataSync
Why wrong: DataSync is for file-based data transfer.
AWS Database Migration Service (AWS DMS)
AWS DMS handles data migration with minimal downtime.
AWS Schema Conversion Tool (AWS SCT)
AWS SCT can assess and convert schema if needed.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
AWS Database Migration Service (AWS DMS)
AWS DMS provides data migration with ongoing replication, and AWS SCT can help convert schema if needed, but for homogeneous migration, DMS alone is sufficient. However, the combination is commonly used. Option C (CloudFormation) is for provisioning. Option D (DataSync) is for file transfer. Option E (App2Container) is for containerization.
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.
AWS App2Container
Why it's wrong here
App2Container is for containerizing applications.
AWS CloudFormation
Why it's wrong here
CloudFormation is for infrastructure provisioning.
AWS DataSync
Why it's wrong here
DataSync is for file-based data transfer.
AWS Database Migration Service (AWS DMS)
Why this is correct
AWS DMS handles data migration with minimal downtime.
Related concept
Static NAT maps one inside address to one outside address.
AWS Schema Conversion Tool (AWS SCT)
Why this is correct
AWS SCT can assess and convert schema if needed.
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
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
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 DBS-C01 NAT questions on configuration and troubleshooting.
Deployment and Migration — study guide chapter
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FAQ
Deployment and Migration — This question tests Deployment and Migration — Static NAT maps one inside address to one outside address..
The correct answer is: AWS Database Migration Service (AWS DMS) — AWS DMS provides data migration with ongoing replication, and AWS SCT can help convert schema if needed, but for homogeneous migration, DMS alone is sufficient. However, the combination is commonly used. Option C (CloudFormation) is for provisioning. Option D (DataSync) is for file transfer. Option E (App2Container) is for containerization.
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 DBS-C01 NAT questions on configuration and troubleshooting.
Static NAT maps one inside address to one outside address.
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Last reviewed: Jun 20, 2026
This DBS-C01 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 DBS-C01 exam.
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