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Management and Operations →mediumMultiple SelectObjective-mapped

DBS-C01 Management and Operations Practice Question

This DBS-C01 practice question tests your understanding of management and operations. 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 an on-premises Oracle database to Amazon RDS for Oracle. The database is 2 TB and has a high number of small transactions. The company needs to minimize downtime during the migration. Which TWO strategies should be used together? (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.

Question 1mediummulti select

Full question →

A
Use Oracle Data Pump to export the database and import into RDS.
Why wrong: Data Pump requires downtime during export/import and does not provide ongoing replication.
B
Set up a VPN connection between on-premises and AWS for direct database link.
Why wrong: A VPN provides connectivity but does not automate migration or reduce downtime.
C
Create a manual snapshot of the RDS instance during the migration.
Why wrong: Manual snapshots are for backup, not for migration from on-premises.
D
Use AWS Database Migration Service (DMS) to perform a full load and ongoing replication.
DMS can migrate data with minimal downtime by using continuous replication after the full load.
E
Configure change data capture (CDC) on the source database and apply to RDS.
DMS supports CDC to capture ongoing changes and apply them to the target, minimizing downtime.

Full breakdown with real-world context →

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

✓

Use AWS Database Migration Service (DMS) to perform a full load and ongoing replication.

AWS DMS with ongoing replication (CDC) is the correct choice because it allows a full load of the 2 TB database followed by continuous replication of changes, minimizing downtime by keeping the target RDS instance nearly synchronized with the source until cutover. This approach is specifically designed for large databases with high transaction volumes, as it reduces the final outage window to seconds or minutes.

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 Oracle Data Pump to export the database and import into RDS.
Why it's wrong here
Data Pump requires downtime during export/import and does not provide ongoing replication.
✗
Set up a VPN connection between on-premises and AWS for direct database link.
Why it's wrong here
A VPN provides connectivity but does not automate migration or reduce downtime.
✗
Create a manual snapshot of the RDS instance during the migration.
Why it's wrong here
Manual snapshots are for backup, not for migration from on-premises.
✓
Use AWS Database Migration Service (DMS) to perform a full load and ongoing replication.
Why this is correct
DMS can migrate data with minimal downtime by using continuous replication after the full load.
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.
✓
Configure change data capture (CDC) on the source database and apply to RDS.
Why this is correct
DMS supports CDC to capture ongoing changes and apply them to the target, minimizing 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.

Common exam traps

Common exam trap: answer the scenario, not the keyword

The trap here is that candidates often confuse 'minimizing downtime' with 'zero downtime' and select Data Pump (A) because it is a familiar Oracle tool, failing to recognize that DMS with CDC is the only option that provides near-continuous replication and a short cutover window.

Detailed technical explanation

How to think about this question

AWS DMS uses a task-based architecture that performs a full load by reading the source Oracle tables via a SELECT statement, then switches to CDC using Oracle's LogMiner or binary reader to capture redo logs. For high-transaction workloads, DMS can be tuned with parallel threads and task settings like 'MaxFullLoadSubTasks' to optimize throughput, but it requires supplemental logging to be enabled on the source for CDC to capture all changes without data loss.

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 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. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. 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.

Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.

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FAQ

Questions learners often ask

What does this DBS-C01 question test?

Management and Operations — This question tests Management and Operations — Read the scenario before looking for a memorised answer..

What is the correct answer to this question?

The correct answer is: Use AWS Database Migration Service (DMS) to perform a full load and ongoing replication. — AWS DMS with ongoing replication (CDC) is the correct choice because it allows a full load of the 2 TB database followed by continuous replication of changes, minimizing downtime by keeping the target RDS instance nearly synchronized with the source until cutover. This approach is specifically designed for large databases with high transaction volumes, as it reduces the final outage window to seconds or minutes.

What should I do if I get this DBS-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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