The correct answer is to use AWS DMS with ongoing replication and perform a cutover. This approach minimizes downtime because DMS captures ongoing changes from the Oracle data warehouse during the initial full load, then continuously replicates incremental transactions to Redshift until you are ready to switch. When you perform the final cutover, only a brief pause is needed to apply the last few seconds of changes, ensuring full data consistency without a long outage. On the AWS Certified SAP on AWS Specialty PAS-C01 exam, this scenario tests your understanding of migration strategies for large-scale data warehouses where business continuity is critical. A common trap is to confuse schema conversion tools like SCT with data migration, or to assume that bulk export methods like UNLOAD/COPY can achieve low downtime—they cannot because they require the source to be static. Remember the memory tip: “DMS keeps the delta, cutover is just a pause.”
PAS-C01 Migration Practice Question
This PAS-C01 practice question tests your understanding of migration. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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 5 TB Oracle data warehouse to Amazon Redshift. They need to minimize downtime and ensure data consistency. Which migration approach should they use?
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 DMS with ongoing replication and perform a cutover
Using DMS with ongoing replication and then a final cutover ensures consistency with minimal downtime. Option A is correct. Option B is wrong because UNLOAD/COPY requires downtime. Option C is wrong because SCT is for schema conversion only. Option D is wrong because Kinesis is for streaming data, not bulk load.
Key principle: ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
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 Oracle UNLOAD and COPY into Redshift
Why it's wrong here
Requires application downtime during export.
✓
Use AWS DMS with ongoing replication and perform a cutover
Why this is correct
DMS can replicate continuously and then apply final changes.
Clue confirmation
The clue word "minimum / minimize" in the question point toward this answer.
Related concept
Standard ACLs match source addresses.
✗
Stream data using Amazon Kinesis and then load into Redshift
Why it's wrong here
Kinesis is for real-time streaming, not bulk historical data.
✗
Use AWS SCT to convert schema and then manually copy data
Why it's wrong here
Manual copy is slow and error-prone.
Common exam traps
Common exam trap: ACLs stop at the first match
ACLs are processed top to bottom. The first matching entry wins, and an implicit deny usually exists at the end.
Detailed technical explanation
How to think about this question
ACL questions test precision: source, destination, protocol, port and direction. A generally correct ACL can still fail if it is applied on the wrong interface or in the wrong direction.
KKey Concepts to Remember
Standard ACLs match source addresses.
Extended ACLs can match source, destination, protocol and ports.
The first matching ACL entry is used.
There is usually an implicit deny at the end.
TExam Day Tips
→Check inbound versus outbound direction.
→Read the ACL from top to bottom.
→Look for a broader permit or deny above the intended line.
Key takeaway
ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement.
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. ACLs process entries top to bottom and stop at the first match. Entry order and interface direction matter as much as the permit or deny statement. 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.
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related PAS-C01 ACL questions on filtering logic and placement.
Migration — This question tests Migration — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: Use AWS DMS with ongoing replication and perform a cutover — Using DMS with ongoing replication and then a final cutover ensures consistency with minimal downtime. Option A is correct. Option B is wrong because UNLOAD/COPY requires downtime. Option C is wrong because SCT is for schema conversion only. Option D is wrong because Kinesis is for streaming data, not bulk load.
What should I do if I get this PAS-C01 question wrong?
Review ACL processing order, placement rules (standard near destination, extended near source), and inbound vs outbound direction. Study wildcard masks and implicit deny. Then practise related PAS-C01 ACL questions on filtering logic and placement.
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?
Standard ACLs match source addresses.
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Question Discussion
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