- A
Export data using mysqldump and import into Aurora during a maintenance window.
Why wrong: mysqldump requires downtime and is not minimal downtime.
- B
Use AWS Schema Conversion Tool (SCT) to convert the schema to Aurora MySQL.
Why wrong: Schema Conversion Tool is not needed when migrating from MySQL to Aurora MySQL.
- C
Create an Amazon Aurora MySQL read replica from an Amazon RDS MySQL DB instance.
Creating an Aurora read replica from RDS MySQL allows near-zero downtime migration.
- D
Use AWS Database Migration Service (DMS) with change data capture (CDC) to migrate data.
Why wrong: DMS with CDC is a valid method, but the question expects a different combination.
- E
Enable binary logging (binlog) on the source RDS MySQL instance and set up replication to Aurora.
Binlog replication allows continuous data synchronization with minimal downtime.
DBS-C01 Aurora MySQL read replica from RDS MySQL Practice Question
This DBS-C01 practice question tests your understanding of deployment and migration. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. A key principle to apply: aurora MySQL read replica from RDS MySQL. 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 is migrating a 2 TB MySQL database to Amazon Aurora MySQL. They need to minimize downtime and ensure data consistency. Which TWO actions should they take? (Choose two.)
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"minimum / minimize"Why it matters: Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
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
Create an Amazon Aurora MySQL read replica from an Amazon RDS MySQL DB instance.
Both Option C and Option E are correct. Option C: Creating an Amazon Aurora MySQL read replica from an existing Amazon RDS MySQL DB instance uses MySQL native replication. The Aurora replica stays synchronized with minimal performance impact. When the replica lag reaches zero, you can promote the Aurora instance to a standalone primary, resulting in very low downtime and full data consistency. Option E: Enabling binary logging (binlog) on the source RDS MySQL instance and setting up replication to Aurora MySQL (for example, by creating an Aurora read replica or configuring an external replication channel) ensures continuous synchronization. This method also minimizes downtime and maintains data consistency. Both approaches avoid the need for a full export/import and are ideal for large databases like 2 TB. Options A (mysqldump) would require a long maintenance window, Option B (SCT) handles schema conversion only, and Option D (DMS with CDC) is a valid migration tool but is not the preferred approach here because native replication is simpler and more efficient for MySQL-to-Aurora MySQL migrations.
Key principle: Aurora MySQL read replica from RDS MySQL
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Export data using mysqldump and import into Aurora during a maintenance window.
Why it's wrong here
mysqldump requires downtime and is not minimal downtime.
- ✗
Use AWS Schema Conversion Tool (SCT) to convert the schema to Aurora MySQL.
Why it's wrong here
Schema Conversion Tool is not needed when migrating from MySQL to Aurora MySQL.
- ✓
Create an Amazon Aurora MySQL read replica from an Amazon RDS MySQL DB instance.
Why this is correct
Creating an Aurora read replica from RDS MySQL allows near-zero downtime migration.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Aurora MySQL read replica from RDS MySQL
- ✗
Use AWS Database Migration Service (DMS) with change data capture (CDC) to migrate data.
Why it's wrong here
DMS with CDC is a valid method, but the question expects a different combination.
- ✓
Enable binary logging (binlog) on the source RDS MySQL instance and set up replication to Aurora.
Why this is correct
Binlog replication allows continuous data synchronization with minimal downtime.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Aurora MySQL read replica from RDS MySQL
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume AWS DMS with CDC (Option D) is the only low-downtime migration method, but for MySQL-to-Aurora MySQL migrations, native replication via read replicas (Option C) and binary logging (Option E) are simpler, faster, and avoid the overhead of a separate DMS instance. Both options are valid and test the understanding that MySQL native replication is the preferred approach in the exam context.
Detailed technical explanation
How to think about this question
Creating an Aurora MySQL read replica from an RDS MySQL instance leverages MySQL's asynchronous replication, where the source writes binary log events and the Aurora replica applies them. Enabling binary logging (binlog) on the source is a prerequisite for this replication; the binlog format must be set to ROW (not STATEMENT or MIXED) to ensure data consistency, especially with DDL statements. In real-world scenarios, you can monitor replica lag using SHOW REPLICA STATUS and promote the Aurora cluster when lag reaches zero, achieving sub-minute downtime.
KKey Concepts to Remember
- Aurora MySQL read replica from RDS MySQL
- Binary log replication
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Aurora MySQL read replica from RDS MySQL
Real-world example
How this comes up in practice
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Aurora MySQL read replica from RDS MySQL Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this DBS-C01 question test?
Deployment and Migration — This question tests Deployment and Migration — Aurora MySQL read replica from RDS MySQL.
What is the correct answer to this question?
The correct answer is: Create an Amazon Aurora MySQL read replica from an Amazon RDS MySQL DB instance. — Both Option C and Option E are correct. Option C: Creating an Amazon Aurora MySQL read replica from an existing Amazon RDS MySQL DB instance uses MySQL native replication. The Aurora replica stays synchronized with minimal performance impact. When the replica lag reaches zero, you can promote the Aurora instance to a standalone primary, resulting in very low downtime and full data consistency. Option E: Enabling binary logging (binlog) on the source RDS MySQL instance and setting up replication to Aurora MySQL (for example, by creating an Aurora read replica or configuring an external replication channel) ensures continuous synchronization. This method also minimizes downtime and maintains data consistency. Both approaches avoid the need for a full export/import and are ideal for large databases like 2 TB. Options A (mysqldump) would require a long maintenance window, Option B (SCT) handles schema conversion only, and Option D (DMS with CDC) is a valid migration tool but is not the preferred approach here because native replication is simpler and more efficient for MySQL-to-Aurora MySQL migrations.
What should I do if I get this DBS-C01 question wrong?
Review aurora MySQL read replica from RDS MySQL, then practise related DBS-C01 questions on the same topic to reinforce the concept.
Are there clue words in this question I should notice?
Yes — watch for: "minimum / minimize". Asks for the least resource use — fewest addresses, smallest subnet, lowest overhead. Eliminate over-provisioned options even if they would technically work.
What is the key concept behind this question?
Aurora MySQL read replica from RDS MySQL
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Last reviewed: Jul 4, 2026
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