DBS-C01 Deployment and Migration Practice Question
A company is migrating a 2 TB MySQL database to Amazon Aurora MySQL. They want to minimize downtime and ensure data consistency. Which TWO methods should they use? (Choose two.)
⚠ Common exam trap
It's easy for candidates to think mysqldump or Snowball are viable for minimizing downtime, but they fail to recognize that these methods require taking the source offline or introduce significant latency, whereas DMS with binary logging enables near-zero downtime through continuous replication.
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
AWS DMS with ongoing replication (Option A) is correct because it allows continuous change data capture (CDC) from the source MySQL database to the target Aurora MySQL cluster, minimizing downtime by keeping the target synchronized during the migration. This approach ensures data consistency by applying incremental changes after the initial full load, enabling a controlled cutover with minimal service interruption.
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 DMS with ongoing replication
Why this is correct
Minimizes downtime with CDC.
- ✗
Use AWS Schema Conversion Tool to convert the schema
Why it's wrong here
Not needed for same engine migration.
- ✗
Use AWS Snowball Edge to transfer backup files
Why it's wrong here
Offline transfer causes downtime.
- ✓
Enable binary logging on the source database for change data capture
Why this is correct
Required for DMS CDC.
- ✗
Use mysqldump to export data
Why it's wrong here
Causes downtime.
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Same concept, more angles
1 more way this is tested on DBS-C01
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 company is migrating a 2 TB MySQL database to Amazon Aurora MySQL. They need to minimize downtime and ensure data consistency. Which approach should be used?
medium- ✓ A.Use AWS DMS with ongoing replication (CDC).
- B.Use mysqldump to export and import into Aurora.
- C.Establish AWS Direct Connect and use MySQL replication.
- D.Use AWS SCT to convert schema and data.
Why A: AWS DMS with ongoing replication (CDC) is the correct approach because it allows you to perform an initial full load of the 2 TB database while continuously capturing and applying changes from the source MySQL database. This minimizes downtime by keeping the target Aurora MySQL cluster nearly synchronized, and you only need to stop writes briefly during the final cutover to ensure data consistency.
JA
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.