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 on AWS and wants to implement a high-availability (HA) solution for SAP Central Services (ASCS/ERS) using Amazon EC2 instances. Which AWS service is essential for managing the virtual IP address (VIP) required for the HA cluster?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Amazon Route 53
Amazon Route 53 is essential for managing the virtual IP address (VIP) required for the SAP Central Services (ASCS/ERS) HA cluster because it provides DNS-based failover. When the active ASCS instance fails, the HA cluster updates a Route 53 DNS record to point to the standby instance's IP address, effectively migrating the VIP. This allows clients to reconnect using the same DNS name without needing an elastic IP or a network-level VIP, which is not natively supported in AWS for this use case.
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.
✗
AWS Global Accelerator
Why it's wrong here
Global Accelerator is used for global traffic management, not for HA VIP within a region.
✓
Amazon Route 53
Why this is correct
Route 53 can provide failover routing with health checks to redirect traffic to the standby ASCS instance.
Related concept
Read the scenario before looking for a memorised answer.
✗
AWS WAF
Why it's wrong here
WAF is a web application firewall, not a routing service.
✗
Application Load Balancer
Why it's wrong here
ALB is not used for ASCS VIP; SAP HA typically uses a floating IP managed by the cluster.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume a traditional on-premises VIP (e.g., using a floating IP with ARP) is required, but AWS does not support that, so the correct answer is a DNS-based solution like Route 53, not a load balancer or accelerator.
Detailed technical explanation
How to think about this question
In AWS, SAP HA clusters (e.g., using SUSE/Red Hat HA or Pacemaker) cannot use traditional ARP-based VIPs because AWS does not support gratuitous ARP or multicast. Instead, they rely on Route 53 DNS failover with a low TTL (e.g., 60 seconds) and health checks to update the A record to the standby instance's private IP upon failure. This approach introduces a DNS propagation delay, which is acceptable for SAP Central Services because the failover is typically manual or scripted, and the cluster software (like SAP's own enqueue replication) handles state synchronization.
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
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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: Amazon Route 53 — Amazon Route 53 is essential for managing the virtual IP address (VIP) required for the SAP Central Services (ASCS/ERS) HA cluster because it provides DNS-based failover. When the active ASCS instance fails, the HA cluster updates a Route 53 DNS record to point to the standby instance's IP address, effectively migrating the VIP. This allows clients to reconnect using the same DNS name without needing an elastic IP or a network-level VIP, which is not natively supported in AWS for this use case.
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.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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