DBS-C01 Deployment and Migration Practice Question
A company wants to migrate an on-premises MongoDB database to Amazon DocumentDB. The migration should be performed with minimal application changes. Which AWS service should be used?
⚠ Common exam trap
Candidates often choose AWS SCT thinking schema conversion is always required, but for a homogeneous migration to a MongoDB-compatible target like DocumentDB, AWS DMS alone handles both schema and data migration without needing SCT.
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
✓
AWS Database Migration Service (AWS DMS)
AWS DMS is the correct service because it supports homogeneous migrations from MongoDB to Amazon DocumentDB, including ongoing replication via change data capture (CDC) to minimize downtime. It handles schema conversion automatically for compatible data types, requiring minimal application changes since DocumentDB is MongoDB-compatible. AWS DMS can migrate data directly from a MongoDB source to a DocumentDB target without needing an intermediate schema transformation tool.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Amazon S3 Transfer Acceleration
Why it's wrong here
S3 Transfer Acceleration is for uploading to S3, not database migration.
- ✗
AWS DataSync
Why it's wrong here
DataSync is for file-based data transfer, not databases.
- ✗
AWS Schema Conversion Tool (AWS SCT)
Why it's wrong here
AWS SCT is not needed for schema conversion since DocumentDB is MongoDB-compatible.
- ✓
AWS Database Migration Service (AWS DMS)
Why this is correct
AWS DMS can migrate data from MongoDB to DocumentDB with minimal application changes.
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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.