The answer is to use AWS Application Migration Service (MGN) to replicate the entire server, including the proprietary database, to AWS. This is correct because MGN performs continuous block-level replication of the entire source server—operating system, applications, and database—bypassing the need for database-specific support that AWS DMS requires. When migrating a database not supported by AWS DMS, MGN treats the entire workload as a single unit, automating the lift-and-shift process and minimizing downtime through ongoing replication. On the AWS Certified SAP on AWS Specialty PAS-C01 exam, this scenario tests your ability to choose a migration strategy when DMS cannot handle the source database; a common trap is to attempt a custom script or manual export, which increases complexity and risk. Remember the memory tip: “If DMS can’t touch the database, MGN moves the whole place.”
PAS-C01 Migration Practice Question
This PAS-C01 practice question tests your understanding of migration. 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 company is migrating a legacy on-premises application to AWS. The application uses a proprietary database that is not supported by AWS Database Migration Service (DMS). The company needs to minimize downtime and automate the migration as much as possible. Which approach should be used?
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 the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use AWS Application Migration Service (MGN) to replicate the entire server, including the database, to AWS.
AWS Application Migration Service (MGN) can replicate entire servers, including the operating system, applications, and the proprietary database, to AWS without requiring database-specific support. This minimizes downtime by using continuous block-level replication and automates the migration by converting the source server into a native AWS instance. Since AWS DMS does not support the proprietary database, MGN provides a viable path for migrating the entire workload as a whole.
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.
✗
Use AWS Database Migration Service (DMS) with a custom endpoint.
Why it's wrong here
DMS only supports specific database engines; a proprietary database is not supported.
✓
Use AWS Application Migration Service (MGN) to replicate the entire server, including the database, to AWS.
Why this is correct
MGN provides continuous replication, supports any database, and automates migration with minimal downtime.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Export the database as a flat file, upload to Amazon S3, and import into Amazon RDS.
Why it's wrong here
This approach involves significant downtime and manual steps, not automated.
✗
Use AWS Snowball to transfer database backups, then restore in Amazon RDS.
Why it's wrong here
Snowball is a offline data transfer tool, not suitable for minimal downtime migration.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates assume AWS DMS can handle any database via custom endpoints, but DMS requires the source database to be one of its supported engines for logical replication; custom endpoints only allow connecting to unsupported targets, not unsupported sources.
Detailed technical explanation
How to think about this question
AWS Application Migration Service (MGN) uses continuous block-level replication via an agent installed on the source server, which sends data to a staging area in the target AWS account. During cutover, the replicated data is used to launch a fully functional EC2 instance that includes the proprietary database, preserving its exact state. This approach is ideal for heterogeneous migrations where the database cannot be directly migrated using DMS, as it treats the entire server as a black box.
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 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.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Migration — This question tests Migration — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use AWS Application Migration Service (MGN) to replicate the entire server, including the database, to AWS. — AWS Application Migration Service (MGN) can replicate entire servers, including the operating system, applications, and the proprietary database, to AWS without requiring database-specific support. This minimizes downtime by using continuous block-level replication and automates the migration by converting the source server into a native AWS instance. Since AWS DMS does not support the proprietary database, MGN provides a viable path for migrating the entire workload as a whole.
What should I do if I get this PAS-C01 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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?
Read the scenario before looking for a memorised answer.
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Question Discussion
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