PAS-C01 Design of SAP Workloads on AWS Practice Question
A company is designing a highly available SAP NetWeaver system on AWS. They plan to use a two-node ASCS/ERS cluster with SUSE Linux Enterprise Server (SLES). Which AWS service is required to manage the virtual IP address for the cluster?
⚠ Common exam trap
It's easy for candidates to confuse the need for a virtual IP address with traditional network-level VIPs (e.g., using Elastic IP or ENI attachment) and overlook that AWS does not support gratuitous ARP, so DNS-based failover via Route 53 is the required method for SAP ASCS/ERS clusters on SLES.
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
✓
Amazon Route 53
Amazon Route 53 is required to manage the virtual IP address for the two-node ASCS/ERS cluster by using DNS failover. In a SLES-based SAP NetWeaver cluster on AWS, the cluster software (e.g., Pacemaker) updates a Route 53 DNS record with the private IP address of the active node, enabling clients to connect via a hostname that resolves to the current primary node. This DNS-based approach replaces traditional virtual IP (VIP) floating, which is not natively supported in AWS VPC due to the lack of gratuitous ARP or multicast.
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 VPC Peering
Why it's wrong here
VPC Peering connects VPCs, not for virtual IP in a cluster.
- ✓
Amazon Route 53
Why this is correct
Route 53 can be configured with DNS failover to route traffic to the active node using the virtual IP.
- ✗
Amazon EBS
Why it's wrong here
EBS provides block storage, not IP management.
- ✗
Elastic Load Balancing
Why it's wrong here
ELB is used for load balancing across multiple instances, not for cluster virtual IP management.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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