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 wants to migrate an on-premises Oracle database to Amazon RDS for Oracle with minimal downtime. Which AWS service should be used for the migration?
AWS Systems Manager
Why wrong: Systems Manager is for management, not migration.
AWS Schema Conversion Tool (SCT)
Why wrong: SCT is used for schema conversion, not the actual data migration.
AWS Database Migration Service (DMS)
DMS supports minimal downtime migrations.
AWS Service Control Policies (SCP)
Why wrong: SCP is for governance, not migration.
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 (DMS)
AWS Database Migration Service (DMS) is designed for migrating databases to AWS with minimal downtime. AWS Schema Conversion Tool (SCT) is used for schema conversion but not for the actual data migration. Service Control Policies (SCP) and Systems Manager are not relevant for database migration.
Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
AWS Systems Manager
Why it's wrong here
Systems Manager is for management, not migration.
AWS Schema Conversion Tool (SCT)
Why it's wrong here
SCT is used for schema conversion, not the actual data migration.
AWS Database Migration Service (DMS)
Why this is correct
DMS supports minimal downtime migrations.
Related concept
Standard ACLs match source addresses.
AWS Service Control Policies (SCP)
Why it's wrong here
SCP is for governance, not migration.
Common exam traps
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Detailed technical explanation
ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.
Key takeaway
ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
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. ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement. 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 ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related DBS-C01 ACL questions on filtering logic and placement.
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FAQ
Deployment and Migration — This question tests Deployment and Migration — Standard ACLs match source addresses..
The correct answer is: AWS Database Migration Service (DMS) — AWS Database Migration Service (DMS) is designed for migrating databases to AWS with minimal downtime. AWS Schema Conversion Tool (SCT) is used for schema conversion but not for the actual data migration. Service Control Policies (SCP) and Systems Manager are not relevant for database migration.
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related DBS-C01 ACL questions on filtering logic and placement.
Standard ACLs match source addresses.
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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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