The correct answer is that binary logging (binlog) must be enabled on the MySQL source database, and the DMS replication instance requires the `REPLICATION CLIENT` and `REPLICATION SLAVE` privileges. AWS DMS Change Data Capture from MySQL works by reading the source database’s binary logs, which record every row-level change; without binlog enabled, DMS cannot track ongoing inserts, updates, or deletes. Additionally, the `REPLICATION CLIENT` privilege allows DMS to query binlog metadata, while `REPLICATION SLAVE` lets it read the binlog stream itself. On the AWS Certified Data Engineer Associate DEA-C01 exam, this question tests your understanding of CDC prerequisites versus optional features—a common trap is confusing S3 bucket versioning or Multi-AZ with required configurations. Remember the memory tip: “Binlog and two Repls” (binlog enabled, plus REPLICATION CLIENT and REPLICATION SLAVE privileges) to avoid overcomplicating the setup.
DEA-C01 Data Ingestion and Transformation Practice Question
This DEA-C01 practice question tests your understanding of data ingestion and transformation. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company uses AWS DMS to replicate data from an Amazon RDS for MySQL database to Amazon S3. Which TWO configurations are required to enable continuous change data capture (CDC) from MySQL?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Grant REPLICATION CLIENT and REPLICATION SLAVE privileges to the DMS user
Correct options: B and D. DMS CDC requires binary logs (binlog) to be enabled on the MySQL source and the S3 target endpoint must be configured with `DataFormat` set to `parquet` or `csv` (but not required for CDC). However, to capture changes, binlog retention must be sufficient. Option B is correct: binlog must be enabled. Option D is correct: DMS needs the `REPLICATION CLIENT` and `REPLICATION SLAVE` privileges. Option A is incorrect; the S3 bucket versioning is not required. Option C is incorrect; the source database does not need to be in Multi-AZ for CDC. Option E is incorrect; the target S3 bucket does not need to be in the same region (though recommended).
Key principle: Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Ensure the S3 bucket is in the same AWS Region as the source database
Why it's wrong here
Not required; cross-region is supported.
✓
Grant REPLICATION CLIENT and REPLICATION SLAVE privileges to the DMS user
Why this is correct
Required for DMS to read binary logs.
Related concept
Authentication checks who the user is.
✓
Enable binary logging (binlog) on the MySQL source database
Why this is correct
Required for CDC to capture changes.
Related concept
Authentication checks who the user is.
✗
Enable versioning on the target S3 bucket
Why it's wrong here
Not required for CDC.
✗
Configure the MySQL source to be Multi-AZ
Why it's wrong here
Not required for CDC.
Common exam traps
Common exam trap: authentication is not authorization
Logging in proves the user can authenticate. It does not automatically mean the user is allowed to enter privileged or configuration mode. Watch for AAA authorization, privilege level and command authorization details.
Detailed technical explanation
How to think about this question
This kind of question is testing the difference between identity and permission. A user may successfully log in to a router because authentication is working, but still fail to enter configuration mode because authorization is missing, misconfigured or mapped to a lower privilege level.
KKey Concepts to Remember
Authentication checks who the user is.
Authorization controls what the user is allowed to do after login.
Privilege levels affect access to EXEC and configuration commands.
AAA, TACACS+ and RADIUS can separate login success from command access.
TExam Day Tips
→Do not assume successful login means full administrative access.
→Look for words such as cannot enter configuration mode, privilege level, authorization or command access.
→Separate login problems from permission problems before choosing the answer.
Key takeaway
Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Got this wrong? Here's your next step.
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related DEA-C01 questions on access control and AAA configuration.
Data Ingestion and Transformation — This question tests Data Ingestion and Transformation — Authentication checks who the user is..
What is the correct answer to this question?
The correct answer is: Grant REPLICATION CLIENT and REPLICATION SLAVE privileges to the DMS user — Correct options: B and D. DMS CDC requires binary logs (binlog) to be enabled on the MySQL source and the S3 target endpoint must be configured with `DataFormat` set to `parquet` or `csv` (but not required for CDC). However, to capture changes, binlog retention must be sufficient. Option B is correct: binlog must be enabled. Option D is correct: DMS needs the `REPLICATION CLIENT` and `REPLICATION SLAVE` privileges. Option A is incorrect; the S3 bucket versioning is not required. Option C is incorrect; the source database does not need to be in Multi-AZ for CDC. Option E is incorrect; the target S3 bucket does not need to be in the same region (though recommended).
What should I do if I get this DEA-C01 question wrong?
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related DEA-C01 questions on access control and AAA configuration.
What is the key concept behind this question?
Authentication checks who the user is.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.