PAS-C01 Enhanced Networking (ENA) Practice Question
An SAP Basis team is implementing SAP HANA system replication across two AWS Availability Zones. The HANA primary instance uses Provisioned IOPS SSD (io2) EBS volumes. The secondary instance must be kept in sync with minimal data loss. Which networking configuration is required to ensure low-latency, high-throughput replication traffic between the instances?
⚠ Common exam trap
Do not confuse low-latency placement with networking requirements. Cluster placement groups are limited to a single Availability Zone and cannot be used for cross-AZ HANA replication. Enhanced Networking (ENA) is the key requirement for high-throughput, low-latency replication traffic.
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
✓
Enable Enhanced Networking (ENA) on both instances.
The correct configuration is to enable Enhanced Networking (ENA) on both instances. ENA provides high throughput and low latency for SAP HANA replication traffic across Availability Zones. ClassicLink is deprecated, VPN adds unnecessary latency, and VPC peering is not needed between subnets already in the same VPC. Cluster placement groups cannot span Availability Zones.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Use ClassicLink to connect the instances.
Why it's wrong here
ClassicLink is deprecated and does not provide low latency or high throughput for HANA replication.
- ✗
Set up a VPN connection between the instances.
Why it's wrong here
A VPN connection adds significant latency and is not suitable for synchronous replication.
- ✓
Enable Enhanced Networking (ENA) on both instances.
Why this is correct
Enhanced Networking (ENA) provides the high throughput and low latency required for SAP HANA system replication traffic across Availability Zones. Cluster placement groups are not valid for cross-AZ placement because they are limited to a single Availability Zone.
- ✗
Configure VPC peering between the two subnets.
Why it's wrong here
VPC peering is used to connect different VPCs; instances in the same VPC across Availability Zones can already communicate without peering.
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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.