The correct choice is to use AWS Database Migration Service (DMS) with a full load and ongoing change data capture (CDC). This strategy works because DMS performs an initial full copy of the 10 TB database, then continuously replicates incremental changes from the source to Amazon RDS for Oracle, keeping them synchronized even over a constrained 50 Mbps link. The CDC phase ensures that only small, ongoing transactions are transmitted after the initial load, which dramatically reduces the final cutover downtime to seconds. On the AWS Certified Solutions Architect Professional SAP-C02 exam, this scenario tests your understanding of how to balance bandwidth limitations with near-zero downtime requirements—a common trap is to select AWS Snowball for the initial load, but that fails because Snowball cannot handle ongoing CDC replication. Remember the memory tip: “Full load for the bulk, CDC for the bulkhead” — the initial load gets the data across, but CDC keeps the door open for continuous sync until you’re ready to switch.
SAP-C02 Practice Question: Accelerate Workload Migration and Modernization
This SAP-C02 practice question tests your understanding of accelerate workload migration and modernization. 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 10 TB Oracle database to Amazon RDS for Oracle. The migration must have minimal downtime. The source database is running on-premises with limited bandwidth (50 Mbps). Which strategy should be used?
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) with a full load and ongoing change data capture (CDC).
Option A is correct because AWS DMS with a full load plus ongoing CDC minimizes downtime over low bandwidth. Option B is wrong because Snowball is for offline data transfer, not CDC. Option C is wrong because export/import requires downtime. Option D is wrong because direct connect does not migrate data.
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.
✗
Use AWS Snowball to transfer a full backup, then manually apply transaction logs.
Why it's wrong here
Snowball is offline and cannot capture ongoing changes, leading to more downtime.
✗
Set up a VPN connection and use Oracle GoldenGate for replication.
Why it's wrong here
While GoldenGate can work, AWS recommends DMS as a managed service with lower overhead.
✓
Use AWS Database Migration Service (DMS) with a full load and ongoing change data capture (CDC).
Why this is correct
DMS with CDC allows minimal downtime by replicating changes after initial load.
Related concept
Standard ACLs match source addresses.
✗
Export the database to flat files, upload to Amazon S3, and import into RDS.
Why it's wrong here
This requires significant downtime to export and import.
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 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.
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 SAP-C02 ACL questions on filtering logic and placement.
Accelerate Workload Migration and Modernization — This question tests Accelerate Workload Migration and Modernization — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: Use AWS Database Migration Service (DMS) with a full load and ongoing change data capture (CDC). — Option A is correct because AWS DMS with a full load plus ongoing CDC minimizes downtime over low bandwidth. Option B is wrong because Snowball is for offline data transfer, not CDC. Option C is wrong because export/import requires downtime. Option D is wrong because direct connect does not migrate data.
What should I do if I get this SAP-C02 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 SAP-C02 ACL questions on filtering logic and placement.
What is the key concept behind this question?
Standard ACLs match source addresses.
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Question Discussion
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