DEA-C01 Data Store Management Practice Question
A company is migrating an on-premises MongoDB database to Amazon DocumentDB. The data engineer needs to ensure minimal downtime during migration. Which AWS service should be used to facilitate the migration?
⚠ Common exam trap
Many exam-takers confuse AWS Glue's ETL capabilities with database migration, overlooking that DMS is the only service purpose-built for live database migrations with minimal downtime and CDC support.
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 (DMS)
AWS Database Migration Service (DMS) supports continuous replication from MongoDB to Amazon DocumentDB using change data capture (CDC), enabling near-zero downtime migration. DMS can perform a full load followed by ongoing replication to keep the target synchronized until cutover.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
AWS Glue
Why it's wrong here
Glue is an ETL service, not a database migration service.
- ✗
AWS Snowball
Why it's wrong here
Snowball is for offline data transfer, not live migration.
- ✓
AWS Database Migration Service (DMS)
Why this is correct
DMS supports live migration from MongoDB to DocumentDB with minimal downtime.
- ✗
Amazon S3 Transfer Acceleration
Why it's wrong here
Accelerates S3 uploads, not database migration.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This DEA-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 DEA-C01 exam.