PAS-C01 Design of SAP Workloads on AWS Practice Question
A company is running SAP HANA on AWS and needs to ensure high availability for the SAP Central Services (ASCS/ERS) instance. Which TWO actions should be taken to achieve this? (Choose two.)
⚠ Common exam trap
Test-takers frequently confuse the role of load balancers, assuming an ALB can handle SAP virtual hostname failover, when in fact only an NLB with a floating IP supports the required Layer 4 static IP behavior for SAP Central Services.
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
✓
Configure ASCS and ERS on separate EC2 instances in different Availability Zones.
SAP Central Services (ASCS/ERS) must run on separate EC2 instances to avoid a single point of failure. Placing them in different Availability Zones (AZs) ensures that if one AZ fails, the other instance can take over, providing high availability. This aligns with SAP's recommendation for a multi-AZ architecture for ASCS/ERS in an SAP HANA on AWS environment.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Configure ASCS and ERS on separate EC2 instances in different Availability Zones.
Why this is correct
Separate instances in different AZs provide high availability.
- ✗
Use an Application Load Balancer to distribute traffic between ASCS and ERS instances.
Why it's wrong here
ALB is not recommended; NLB with floating IP is used for SAP.
- ✓
Use a Network Load Balancer with a floating IP address for the SAP virtual hostname.
Why this is correct
NLB with floating IP enables failover of the virtual hostname.
- ✗
Deploy both ASCS and ERS on the same EC2 instance to reduce latency.
Why it's wrong here
Single instance creates a single point of failure.
- ✗
Place both ASCS and ERS in the same Availability Zone to minimize network latency.
Why it's wrong here
Same AZ does not protect against AZ failure.
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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.