DBS-C01 Deployment and Migration Practice Question
A company is migrating a 5 TB Microsoft SQL Server database to Amazon Aurora MySQL. The migration must be completed with minimal downtime. Which THREE steps should the company take? (Select THREE.)
⚠ Common exam trap
Many exam-takers confuse the Aurora reader endpoint (for read replicas) with the writer endpoint (for primary writes), and incorrectly assume a read replica is needed during migration, when in fact the migration requires schema conversion and ongoing replication via DMS.
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 to perform a full load and ongoing replication from SQL Server to Aurora.
AWS DMS (Database Migration Service) supports ongoing replication (change data capture) from Microsoft SQL Server to Amazon Aurora MySQL, enabling a full load followed by continuous sync of changes. This minimizes downtime by allowing the source database to remain operational until the final cutover, at which point the application switches to the Aurora writer endpoint.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Update the application connection string to point to the Aurora reader endpoint.
Why it's wrong here
Reader endpoint is for read-only workloads.
- ✓
Use AWS DMS to perform a full load and ongoing replication from SQL Server to Aurora.
Why this is correct
DMS handles data migration with minimal downtime.
- ✗
Create a read replica of the Aurora database in the same region.
Why it's wrong here
Read replica is not needed for migration; it's for read scaling.
- ✓
Use AWS SCT to convert the SQL Server schema to MySQL-compatible schema.
Why this is correct
SCT converts schema and code.
- ✓
Update the application connection string to point to the Aurora writer endpoint after cutover.
Why this is correct
Application must use the new endpoint.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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.