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DBS-C01 Deployment and Migration Practice Question

Network Topology
$ aws dms describe-replication-tasksfilters Name=replication-task-id"ReplicationTasks": ["ReplicationTaskIdentifier": "my-task","SourceEndpointArn": "arn:aws:dms:us-east-1:123456789012:endpoint:AAAAAA","TargetEndpointArn": "arn:aws:dms:us-east-1:123456789012:endpoint:BBBBBB","ReplicationInstanceArn": "arn:aws:dms:us-east-1:123456789012:rep:CCCCCC","MigrationType": "full-load","TableMappings": "...","ReplicationTaskStats": {"FullLoadProgressPercent": 100,"TablesQueued": 0,"TablesLoaded": 5,"TablesCurrent": 0,"TablesSkipped": 0,"TablesErrored": 0},"Status": "stopped","StopReason": "Full load completed"

A team is migrating an on-premises database to Amazon RDS using AWS DMS. After the full load completed, the task stopped. The team needs to perform ongoing replication to minimize downtime. What change should the team make to the DMS task?

⚠ Common exam trap

Many candidates think restarting the task or creating a new instance will automatically enable CDC, but DMS requires explicitly modifying the migration type to include CDC after the full load completes.

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

✓

Modify the replication task to change the migration type to 'full-load-and-cdc'.

After a full load completes and the task stops, the team needs to enable ongoing replication to capture and apply changes made to the source database during the migration window. Modifying the DMS task to use the 'full-load-and-cdc' migration type allows the task to perform the initial full load and then seamlessly transition to Change Data Capture (CDC) to replicate incremental changes, minimizing downtime. This is the correct approach because DMS supports switching a completed full-load task to include CDC without re-running the full load.

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

  • ✓

    Modify the replication task to change the migration type to 'full-load-and-cdc'.

    Why this is correct

    Changing to 'full-load-and-cdc' enables both full load and ongoing change data capture replication.

  • ✗

    Restart the replication task with the same settings.

    Why it's wrong here

    Restarting a full-load task will re-run the full load, not enable ongoing replication.

  • ✗

    Create a new replication instance and start a new full-load task.

    Why it's wrong here

    This does not enable ongoing replication; it's just a new full load.

  • ✗

    Use AWS Schema Conversion Tool to convert the schema again.

    Why it's wrong here

    Schema conversion is not related to replication type.

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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.