- A
The Elastic IP is associated with the primary private IP address of the ENI.
EIPs are associated with private IPs; if it's on the primary IP, the ENI cannot be moved without detaching. A secondary IP allows reassignment.
- B
The Elastic IP is in a different Availability Zone than the secondary ASCS instance.
Why wrong: EIPs are region-specific and can be moved across AZs as long as they are not associated.
- C
The cluster is using a NAT Gateway for outbound traffic, conflicting with the Elastic IP.
Why wrong: NAT Gateway is for outbound traffic; does not affect EIP reassignment.
- D
The IAM role assigned to the instances does not have permission to release the Elastic IP.
Why wrong: IAM permissions are for API calls; the resource agent uses AWS CLI, but the error is about releasing, not permissions.
Quick Answer
The answer is that the Elastic IP is associated with the primary private IP address of the ENI rather than the ENI itself. This is the most likely cause of the SAP multi-ASCS Elastic IP failover issue because the 'aws-cluster' resource agent in a multi-ASCS setup manages failover by disassociating the Elastic IP from the ENI as a whole, not from a specific private IP address. When the EIP is bound at the IP level, the resource agent cannot release it, preventing the secondary ASCS instance from acquiring the EIP during a failover test. On the AWS Certified SAP on AWS Specialty PAS-C01 exam, this scenario tests your understanding of how the cluster resource agent interacts with AWS networking primitives—a common trap is assuming any EIP association works, but the agent requires ENI-level ownership to reassign the address. Memory tip: think "ENI, not IP" to remember that the association must be at the network interface level for the agent to release and reassign the Elastic IP.
PAS-C01 Design of SAP Workloads on AWS Practice Question
This PAS-C01 practice question tests your understanding of design of sap workloads on aws. 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.
A company runs SAP ECC on AWS with a multi-ASCS architecture for high availability. During a failover test, the secondary ASCS instance does not take over. The cluster logs indicate that the 'aws-cluster' resource agent failed to release the Elastic IP. 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 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 Elastic IP is associated with the primary private IP address of the ENI.
In a multi-ASCS SAP cluster on AWS, the 'aws-cluster' resource agent manages Elastic IP (EIP) failover by disassociating the EIP from the primary instance and associating it with the secondary instance. If the EIP is associated with the primary private IP address of the Elastic Network Interface (ENI) rather than the ENI itself, the resource agent cannot release it because the association is at the IP level, not the ENI level. This prevents the secondary ASCS instance from acquiring the EIP, causing the failover to fail.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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 Elastic IP is associated with the primary private IP address of the ENI.
Why this is correct
EIPs are associated with private IPs; if it's on the primary IP, the ENI cannot be moved without detaching. A secondary IP allows reassignment.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
The Elastic IP is in a different Availability Zone than the secondary ASCS instance.
Why it's wrong here
EIPs are region-specific and can be moved across AZs as long as they are not associated.
- ✗
The cluster is using a NAT Gateway for outbound traffic, conflicting with the Elastic IP.
- ✗
The IAM role assigned to the instances does not have permission to release the Elastic IP.
Why it's wrong here
IAM permissions are for API calls; the resource agent uses AWS CLI, but the error is about releasing, not permissions.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume IAM permissions (Option D) are the root cause of any AWS resource management failure, but the specific log message about 'failed to release' points to a technical limitation of the resource agent with IP-level EIP associations, not an authorization issue.
Detailed technical explanation
How to think about this question
The 'aws-cluster' resource agent in Pacemaker uses the AWS EC2 API to disassociate and associate Elastic IPs. When an EIP is associated with a private IP on an ENI (using the 'PrivateIpAddress' parameter), the disassociation requires specifying both the association ID and the private IP; if the agent only tracks the ENI-level association, it cannot properly release the IP-level binding. In real-world scenarios, this often occurs when using custom network configurations or when the EIP was manually associated with a secondary private IP, bypassing the standard ENI-level association that the agent expects.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
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.
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FAQ
Questions learners often ask
What does this PAS-C01 question test?
Design of SAP Workloads on AWS — This question tests Design of SAP Workloads on AWS — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The Elastic IP is associated with the primary private IP address of the ENI. — In a multi-ASCS SAP cluster on AWS, the 'aws-cluster' resource agent manages Elastic IP (EIP) failover by disassociating the EIP from the primary instance and associating it with the secondary instance. If the EIP is associated with the primary private IP address of the Elastic Network Interface (ENI) rather than the ENI itself, the resource agent cannot release it because the association is at the IP level, not the ENI level. This prevents the secondary ASCS instance from acquiring the EIP, causing the failover to fail.
What should I do if I get this PAS-C01 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
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.
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