DEA-C01 Data Operations and Support Practice Question
A company uses Amazon RDS for MySQL as a source for AWS DMS. The replication tasks are failing due to large transactions on the source. The team wants to reduce the impact of large transactions on DMS. Which THREE actions should the team take?
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 size of the source RDS instance and enable binary logging with ROW format.
To reduce the impact of large transactions on AWS DMS when using Amazon RDS for MySQL as a source, the recommended actions are: increasing the source RDS instance size and enabling binary logging with ROW format (option B) to better handle large transactions and support CDC; enabling BatchApply (option C) to reduce the time to apply changes by batching them; and tuning the DMS task to use a larger memory limit while adjusting the transaction size (option E) to improve memory management. Option A is incorrect because increasing parallel threads on the source does not directly mitigate large transaction impact; DMS manages parallelism internally. Option D is incorrect because using 'full load only' would stop CDC, making it unsuitable for ongoing replication.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Increase the number of parallel threads on the source.
Why it's wrong here
More threads increase source load.
- ✓
Increase the size of the source RDS instance and enable binary logging with ROW format.
Why this is correct
Larger instance and proper logging help DMS capture changes.
- ✓
Enable BatchApply in the DMS task settings.
Why this is correct
BatchApply reduces the number of apply statements.
- ✗
Use the 'full load only' migration type.
Why it's wrong here
Full load only does not capture ongoing changes.
- ✓
Tune the DMS task to use a larger memory limit and adjust the transaction size.
Why this is correct
Helps handle large transactions.
Go deeper
Related to this question
About these practice questions
Courseiva writes every DEA-C01 question from scratch — 1,711 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
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.