The correct combination is AWS Schema Conversion Tool (SCT) for schema conversion and AWS DMS for data migration, because SCT handles the heavy lifting of translating SQL Server-specific schema objects like stored procedures and indexes into PostgreSQL-compatible formats, while DMS performs the actual data transfer with continuous replication to minimize downtime. On the AWS Certified Database Specialty DBS-C01 exam, this scenario tests your understanding that schema conversion and data migration are distinct phases—a common trap is assuming DMS alone can handle schema changes, but DMS only moves data and requires a compatible target schema. Another trick is confusing the Data Migration Assistant, which is for SQL Server-to-SQL Server migrations only. For a 3 TB database requiring automation and repeatability, SCT first generates the target schema, then DMS loads the data and can keep both databases in sync until cutover. Memory tip: think “SCT for structure, DMS for data.”
DBS-C01 Deployment and Migration Practice Question
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 needs to migrate a 3 TB Amazon RDS for SQL Server database to Amazon RDS for PostgreSQL. The migration must be automated and repeatable with minimal manual intervention. Which combination of services should be used?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use AWS Schema Conversion Tool (SCT) to convert the schema, then use AWS DMS to migrate the data.
AWS SCT converts the schema, AWS DMS migrates the data with continuous sync. Option B: DMS only does not convert schema. Option C: SCT only does not migrate data. Option D: Data Migration Assistant is for SQL Server to SQL Server.
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 SCT to convert the schema and export data to PostgreSQL-compatible format, then import.
Why it's wrong here
SCT does not handle ongoing data migration.
✓
Use AWS Schema Conversion Tool (SCT) to convert the schema, then use AWS DMS to migrate the data.
Why this is correct
SCT handles schema conversion, DMS handles data migration.
Related concept
Static NAT maps one inside address to one outside address.
✗
Use AWS DMS with native SQL Server CDC to migrate directly to PostgreSQL.
Why it's wrong here
DMS cannot automatically convert schema between different engines.
✗
Use Microsoft Data Migration Assistant to assess and migrate to PostgreSQL.
Why it's wrong here
Data Migration Assistant is for SQL Server to SQL Server.
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 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
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 DBS-C01 NAT questions on configuration and troubleshooting.
Deployment and Migration — This question tests Deployment and Migration — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Use AWS Schema Conversion Tool (SCT) to convert the schema, then use AWS DMS to migrate the data. — AWS SCT converts the schema, AWS DMS migrates the data with continuous sync. Option B: DMS only does not convert schema. Option C: SCT only does not migrate data. Option D: Data Migration Assistant is for SQL Server to SQL Server.
What should I do if I get this DBS-C01 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 DBS-C01 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Question Discussion
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