PAS-C01 Migration Practice Question
A company is migrating an on-premises Oracle database to Amazon RDS for Oracle. The database is 2 TB in size and has a high transaction rate. The migration must have minimal downtime. Which AWS service should be used for the migration?
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) is the correct choice because it supports ongoing replication from the source Oracle database to Amazon RDS for Oracle, enabling minimal downtime during migration. Option A (AWS Snowball Edge) is incorrect because it is designed for large-scale offline data transfer, not for online replication with minimal downtime. Option B (AWS Server Migration Service) is for migrating on-premises servers to AWS, not databases. Option C (AWS DataSync) is used for file-based data transfers, not database migrations.
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 Snowball Edge
Why it's wrong here
Snowball is for offline bulk data transfer, not minimal downtime.
- ✗
AWS Server Migration Service (SMS)
Why it's wrong here
SMS is for server volume migrations, not databases.
- ✗
AWS DataSync
Why it's wrong here
DataSync is for file transfers, not database replication.
- ✓
AWS Database Migration Service (DMS)
Why this is correct
DMS supports live migration with ongoing replication.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PAS-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 PAS-C01 exam.