DBS-C01 Management and Operations Practice Question
A company is migrating an on-premises MongoDB database to Amazon DocumentDB. The migration must have minimal downtime. Which THREE steps should be taken? (Choose three.)
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
✓
Create an Amazon DocumentDB cluster as the target.
You must create the target DocumentDB cluster before migration. Option C is correct: AWS DMS can perform a full load followed by ongoing replication to minimize downtime. Option E is correct: the source MongoDB must be configured to capture oplog events so that DMS can replicate changes. Option A is incorrect because AWS Snowball Edge is for offline data transfer, which would not achieve minimal downtime. Option D is incorrect because sharding the cluster across multiple regions is not required for a migration with minimal downtime.
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 Snowball Edge to transfer initial data.
Why it's wrong here
Snowball is for offline transfer, which would require longer downtime.
- ✓
Create an Amazon DocumentDB cluster as the target.
Why this is correct
DocumentDB is the target for migration.
- ✓
Use AWS DMS to perform a full load and then ongoing replication.
Why this is correct
DMS supports MongoDB as source and DocumentDB as target with change data capture.
- ✗
Shard the DocumentDB cluster across multiple regions.
Why it's wrong here
Sharding is not required for migration and adds complexity.
- ✓
Configure the source MongoDB to send oplog events to DMS.
Why this is correct
Oplog replication enables ongoing changes to be captured with minimal downtime.
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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.