This PAS-C01 practice question tests your understanding of technology. 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.
An SAP Basis administrator needs to migrate an on-premises SAP ERP system running on Oracle to AWS. The system has a 2 TB database and requires minimal downtime (less than 1 hour). The current on-premises network bandwidth to AWS is 1 Gbps. Which migration strategy is MOST appropriate?
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 ongoing replication from Oracle to Amazon RDS for Oracle, then perform a final cutover.
Option B is correct because AWS DMS can perform ongoing replication to keep the target in sync, then a short cutover achieves <1 hour downtime. Option A (AWS MGN) is for server-level replication, not optimized for database migration with minimal downtime. Option C (SAP HSR) is specific to SAP HANA. Option D (SAP DMO) is a methodology but typically used for system copy or upgrade, not real-time replication.
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 the database using SAP HANA System Replication (HSR) to an Amazon EC2 instance with HANA.
Why it's wrong here
HSR is for HANA databases, not Oracle.
✗
Perform a manual export/import using Oracle Data Pump and transfer the dump file via AWS Direct Connect.
Why it's wrong here
Export/import would take longer than 1 hour due to 2 TB size and 1 Gbps bandwidth.
✗
Use AWS Application Migration Service (MGN) to replicate the entire server to AWS, then cut over.
Why it's wrong here
MGN replicates the entire OS, not optimized for database-level migration with minimal downtime.
✓
Use AWS Database Migration Service (DMS) with ongoing replication from Oracle to Amazon RDS for Oracle, then perform a final cutover.
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 healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
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.
Technology — This question tests Technology — Standard ACLs match source addresses..
What is the correct answer to this question?
The correct answer is: Use AWS Database Migration Service (DMS) with ongoing replication from Oracle to Amazon RDS for Oracle, then perform a final cutover. — Option B is correct because AWS DMS can perform ongoing replication to keep the target in sync, then a short cutover achieves <1 hour downtime. Option A (AWS MGN) is for server-level replication, not optimized for database migration with minimal downtime. Option C (SAP HSR) is specific to SAP HANA. Option D (SAP DMO) is a methodology but typically used for system copy or upgrade, not real-time replication.
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.
What is the key concept behind this question?
Standard ACLs match source addresses.
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Question Discussion
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