The answer is that the source database must be accessible from the DMS replication instance and binary logging must be enabled for Change Data Capture (CDC). AWS DMS requires network connectivity between the replication instance and the source endpoint to establish a connection, while binary logging is essential for capturing ongoing changes during continuous replication from SAP HANA. On the AWS Certified SAP on AWS Specialty PAS-C01 exam, this question tests your understanding of DMS prerequisites for SAP HANA replication, often appearing as a trap where candidates confuse performance-tuning options like increased memory with mandatory requirements. A common memory tip is to think of the two core needs: reachability for the initial load and logging for the ongoing sync—without both, replication simply cannot start or sustain itself.
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 an on-premises SAP HANA database to AWS. They want to use AWS DMS for ongoing replication. Which TWO prerequisites must be met before starting the replication? (Choose TWO.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The source database must have binary logging enabled (for CDC).
AWS DMS requires a source endpoint that is accessible (Option A) and binary logging enabled for CDC (Option C). Option B is optional for performance. Option D is not required. Option E is for SCT, not DMS.
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.
✗
The source database must be running on an EC2 instance.
Why it's wrong here
DMS can connect to on-premises databases directly.
✓
The source database must have binary logging enabled (for CDC).
Why this is correct
Binary logging is required for change data capture.
Related concept
Standard ACLs match source addresses.
✓
The source database must be accessible from the DMS replication instance.
Why this is correct
Connectivity is essential for DMS to read data.
Related concept
Standard ACLs match source addresses.
✗
The target database must be Amazon RDS for Oracle.
Why it's wrong here
Target can be various databases; not limited to Oracle.
✗
The schema must be converted using AWS SCT first.
Why it's wrong here
SCT is for schema conversion, not a prerequisite for DMS replication.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
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: The source database must have binary logging enabled (for CDC). — AWS DMS requires a source endpoint that is accessible (Option A) and binary logging enabled for CDC (Option C). Option B is optional for performance. Option D is not required. Option E is for SCT, not DMS.
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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