The correct answer is that the ODBC driver configuration on the DMS replication instance is incorrect, as the error message explicitly points to an ODBC connection failure rather than a network or privilege issue. When AWS DMS replicates from SAP ASE, it relies on the ODBC driver installed on the replication instance to translate calls between the source database and the DMS engine; if the driver version is mismatched, the DSN is misconfigured, or the driver is missing entirely, the task will fail with this specific error even when the source is reachable. On the AWS Certified SAP on AWS Specialty PAS-C01 exam, this scenario tests your understanding of DMS prerequisites for SAP ASE migrations, often appearing as a trap where candidates blame network connectivity or database permissions instead of the ODBC layer. A common memory tip is to think of ODBC as the “translator” between DMS and SAP ASE—if the translator speaks the wrong dialect, the conversation fails regardless of how close the speakers are.
PAS-C01 Migration Practice Question
This PAS-C01 practice question tests your understanding of migration. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
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?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
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
Option A is incorrect because the error mentions ODBC connection failure, not privileges. Option B is correct because the source database ODBC driver or settings may be misconfigured. Option C is incorrect because the task is already using the correct engine. Option D is incorrect because the network is reachable.
Key principle: Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
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.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Authentication checks who the user is.
✗
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.
Common exam traps
Common exam trap: authentication is not authorization
Logging in proves the user can authenticate. It does not automatically mean the user is allowed to enter privileged or configuration mode. Watch for AAA authorization, privilege level and command authorization details.
Detailed technical explanation
How to think about this question
This kind of question is testing the difference between identity and permission. A user may successfully log in to a router because authentication is working, but still fail to enter configuration mode because authorization is missing, misconfigured or mapped to a lower privilege level.
KKey Concepts to Remember
Authentication checks who the user is.
Authorization controls what the user is allowed to do after login.
Privilege levels affect access to EXEC and configuration commands.
AAA, TACACS+ and RADIUS can separate login success from command access.
TExam Day Tips
→Do not assume successful login means full administrative access.
→Look for words such as cannot enter configuration mode, privilege level, authorization or command access.
→Separate login problems from permission problems before choosing the answer.
Key takeaway
Authentication proves identity; authorization controls what that identity can do after login. Both must work for full privileged access.
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 Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related PAS-C01 questions on access control and AAA configuration.
Migration — This question tests Migration — Authentication checks who the user is..
What is the correct answer to this question?
The correct answer is: The ODBC driver configuration on the DMS replication instance is incorrect — Option A is incorrect because the error mentions ODBC connection failure, not privileges. Option B is correct because the source database ODBC driver or settings may be misconfigured. Option C is incorrect because the task is already using the correct engine. Option D is incorrect because the network is reachable.
What should I do if I get this PAS-C01 question wrong?
Review Cisco AAA concepts — authentication, authorization, and accounting. Study privilege levels (0–15), command authorization under TACACS+, and how RADIUS differs. Then practise related PAS-C01 questions on access control and AAA configuration.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Authentication checks who the user is.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.