The answer is ensuring low latency (less than 1ms RTT) between all nodes, using placement groups, and dedicating a separate network for HANA traffic. This is critical because SAP HANA scale-out relies on high-speed, low-latency internode communication for its shared-nothing architecture; any delay above 1ms can cause significant performance degradation or cluster instability. On the AWS Certified SAP on AWS Specialty PAS-C01 exam, this question tests your understanding of network design for SAP HANA scale-out on AWS, specifically how placement groups enforce physical proximity and how a dedicated network segment isolates HANA traffic from other workloads. A common trap is assuming a separate VPC or public IPs are required, but the correct approach uses a single VPC with enhanced networking and placement groups. Memory tip: think “1ms, one group, one network” to recall the three pillars of latency, placement, and dedicated HANA traffic.
PAS-C01 Migration Practice Question
This PAS-C01 practice question tests your understanding of migration. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 is migrating its SAP landscape to AWS and plans to use an SAP HANA multi-node scale-out configuration. Which THREE considerations are important for the network design?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use a placement group to ensure nodes are in close proximity
For HANA scale-out, low latency between nodes (less than 1ms RTT) is required, placement groups ensure proximity, and dedicated network for HANA ensures performance. Option A (public IPs) is not required. Option D (NATGateway) is for internet access. Option E (separate VPC) is not needed.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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 a placement group to ensure nodes are in close proximity
Why this is correct
Placement groups reduce latency between instances.
Related concept
Static NAT maps one inside address to one outside address.
✓
Dedicate a separate network interface for HANA inter-node traffic
Why this is correct
Dedicated interface improves performance and isolation.
Related concept
Static NAT maps one inside address to one outside address.
✗
Use a NAT Gateway for inter-node traffic
Why it's wrong here
NATGateway is for outbound internet, not inter-node.
✗
Use public IP addresses for inter-node communication
Why it's wrong here
Public IPs are not needed; internal communication uses private IPs.
✓
Ensure low latency (less than 1ms RTT) between all nodes
Why this is correct
HANA scale-out requires low latency for performance.
Related concept
Static NAT maps one inside address to one outside address.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
How this comes up in practice
A company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
What to study next
Got this wrong? Here's your next step.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related PAS-C01 NAT questions on configuration and troubleshooting.
Migration — This question tests Migration — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Use a placement group to ensure nodes are in close proximity — For HANA scale-out, low latency between nodes (less than 1ms RTT) is required, placement groups ensure proximity, and dedicated network for HANA ensures performance. Option A (public IPs) is not required. Option D (NAT Gateway) is for internet access. Option E (separate VPC) is not needed.
What should I do if I get this PAS-C01 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related PAS-C01 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Question Discussion
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