- A
AWS Snowball
Why wrong: Snowball is for large offline data transfer, not for minimal downtime database migration.
- B
AWS Schema Conversion Tool (SCT)
SCT converts schema between different database engines.
- C
AWS Direct Connect
Why wrong: Direct Connect establishes a dedicated network connection but does not migrate databases.
- D
AWS DataSync
Why wrong: DataSync is for file data, not databases.
- E
AWS Database Migration Service (DMS)
DMS supports live migration with CDC.
Question 644 of 997
CV0-004 Deployment Practice Question
This CV0-004 practice question tests your understanding of deployment. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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 cloud engineer is migrating a legacy application to AWS. The application requires minimal downtime during the database migration from SQL Server to Aurora MySQL. Which TWO AWS services should the engineer use to achieve this?
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 Schema Conversion Tool (SCT)
The AWS Schema Conversion Tool (SCT) is used to convert the source SQL Server database schema and code to be compatible with Aurora MySQL, handling differences in data types, stored procedures, and other database objects. The AWS Database Migration Service (DMS) then performs the actual data migration with minimal downtime by continuously replicating changes from the source to the target database until a cutover is performed. Together, SCT and DMS enable a heterogeneous migration with near-zero downtime.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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
Why it's wrong here
Snowball is for large offline data transfer, not for minimal downtime database migration.
- ✓
AWS Schema Conversion Tool (SCT)
Why this is correct
SCT converts schema between different database engines.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
AWS Direct Connect
Why it's wrong here
Direct Connect establishes a dedicated network connection but does not migrate databases.
- ✗
AWS DataSync
Why it's wrong here
DataSync is for file data, not databases.
- ✓
AWS Database Migration Service (DMS)
Why this is correct
DMS supports live migration with CDC.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Cisco often tests the distinction between data migration services (DMS) and data transfer services (DataSync, Snowball), where candidates mistakenly choose DataSync for database migrations because it sounds similar to 'data synchronization' but it lacks schema conversion and live database replication capabilities.
Detailed technical explanation
How to think about this question
AWS DMS uses a change data capture (CDC) mechanism that reads the source SQL Server transaction logs to capture ongoing changes, allowing the target Aurora MySQL database to stay synchronized with minimal replication lag. SCT assesses the source schema and automatically converts incompatible objects, such as SQL Server T-SQL functions to MySQL-compatible equivalents, and can also generate migration reports for manual review. In a real-world scenario, the engineer would first run SCT to convert the schema, then use DMS with a full load followed by continuous CDC replication, and finally perform a brief cutover window to switch traffic to Aurora MySQL.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
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
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the CV0-004 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this CV0-004 question test?
Deployment — This question tests Deployment — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: AWS Schema Conversion Tool (SCT) — The AWS Schema Conversion Tool (SCT) is used to convert the source SQL Server database schema and code to be compatible with Aurora MySQL, handling differences in data types, stored procedures, and other database objects. The AWS Database Migration Service (DMS) then performs the actual data migration with minimal downtime by continuously replicating changes from the source to the target database until a cutover is performed. Together, SCT and DMS enable a heterogeneous migration with near-zero downtime.
What should I do if I get this CV0-004 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
This CV0-004 practice question is part of Courseiva's free CompTIA 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 CV0-004 exam.
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