PAS-C01 Migration Practice Question
Network Topology
Refer to the exhibit. A migration team is using AWS DMS to replicate data from an on-premises SAP ASE database to Amazon RDS for SAP ASE. The DMS task fails with the error shown. The source database is reachable from the DMS replication instance. What is the most likely cause?
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
✓
The ODBC driver configuration on the DMS replication instance is incorrect
The error indicates an ODBC connection failure, which typically occurs when the ODBC driver or its configuration on the DMS replication instance is incorrect. Since the source database is reachable, the issue is not firewall or IAM permissions. The DMS task is using the correct source engine type (SAP ASE), so the most likely cause is a misconfigured ODBC driver on the replication instance, making Option A correct.
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 ODBC driver configuration on the DMS replication instance is incorrect
Why this is correct
ODBC error indicates driver or connection string issue.
- ✗
The source database port is blocked by a firewall
Why it's wrong here
The error says 'Unable to connect to data source' but network is reachable per stem.
- ✗
The DMS task is using the wrong source engine type (e.g., SQL Server instead of SAP ASE)
Why it's wrong here
Engine type is set correctly; error is ODBC-related.
- ✗
The DMS replication instance does not have the required IAM permissions
Why it's wrong here
Network reachable; IAM not related to ODBC connection.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This PAS-C01 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PAS-C01 exam.