PAS-C01 Design of SAP Workloads on AWS Practice Question
An SAP Basis administrator notices that the SAP application server on an EC2 instance is experiencing intermittent high latency when writing to the SAP HANA database. The HANA database is on a separate EC2 instance in the same VPC and Availability Zone. Which configuration change is most likely to resolve the issue?
⚠ Common exam trap
It's easy for candidates to confuse network performance issues with compute or storage optimizations, leading them to choose EBS optimization or placement groups, when the real fix is a simple MTU adjustment to eliminate packet fragmentation overhead.
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 Jumbo Frames on the network interfaces
The intermittent high latency when writing to SAP HANA is likely caused by network packet fragmentation. Enabling Jumbo Frames (MTU 9001) on the network interfaces of both the SAP application server and the HANA database EC2 instances reduces the number of packets required for large data transfers, lowers CPU overhead for packet processing, and improves throughput. This is a standard recommendation for SAP on AWS to optimize network performance between application and database layers.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Launch the instances in a cluster placement group
Why it's wrong here
Placement groups are for low-latency within a group, but instances are already in same AZ; jumbo frames are more effective.
- ✗
Enable EBS optimization on both instances
Why it's wrong here
EBS optimization is for storage performance, not network latency between instances.
- ✗
Change the Elastic Network Adapter (ENA) to SR-IOV
Why it's wrong here
ENA is the modern standard; SR-IOV is older and may not improve latency.
- ✓
Enable Jumbo Frames on the network interfaces
Why this is correct
Jumbo Frames reduce overhead for large packets, improving network throughput and reducing latency for HANA communication.
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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.