DBS-C01 Deployment and Migration Practice Question
A company is migrating a 2 TB SQL Server database to Amazon RDS for SQL Server. They need to minimize downtime and are using AWS DMS with CDC. The migration is taking longer than expected during the full load phase. Which change would most likely improve the full load performance?
⚠ Common exam trap
Watch out — candidates often assume a larger target instance (Option C) is the universal performance fix, but AWS DMS full load performance is more commonly limited by the parallelism of the load tasks, not the target instance size, especially when the target can keep up with writes.
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
✓
Increase the number of parallel load tasks in the DMS task settings
Increasing the number of parallel load tasks in the DMS task settings allows the full load to be split into multiple concurrent threads, each handling a subset of tables or partitions. This directly improves throughput by utilizing more of the available source and target resources, which is the most effective way to accelerate a slow full load phase when using AWS DMS with CDC.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Disable CDC to focus on full load only
Why it's wrong here
CDC is needed for minimal downtime; disabling it requires another full load.
- ✗
Use AWS Schema Conversion Tool to optimize schema
Why it's wrong here
SCT is for schema conversion, not load speed.
- ✗
Use a larger RDS instance class for the target
Why it's wrong here
Helps but not directly addressing DMS load parallelism.
- ✓
Increase the number of parallel load tasks in the DMS task settings
Why this is correct
More parallel tasks can load data faster.
Go deeper
Related to this question
About these practice questions
One of 1,663 original DBS-C01 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
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.