The answer is to place both EC2 instances in the same cluster placement group. This configuration is correct because a cluster placement group packs instances close together inside an Availability Zone, enabling low-latency, high-throughput networking that directly addresses the bottleneck in SAP RFC batch data transfers. On the AWS Certified SAP on AWS Specialty PAS-C01 exam, this question tests your understanding of how to reduce network latency for SAP RFC traffic, often appearing as a scenario where teams mistakenly blame ENA or public IPs. A common trap is choosing Elastic Fabric Adapter, but that is designed for tightly coupled HPC workloads, not general SAP communication. Remember the memory tip: for SAP RFC, think “cluster for closeness” — the goal is physical proximity, not additional hardware or IP changes.
PAS-C01 Technology Practice Question
This PAS-C01 practice question tests your understanding of technology. 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.
An SAP system on AWS sends large amounts of batch data via RFC calls between two EC2 instances in the same VPC. The application team reports high network latency. Which configuration change would most effectively reduce latency?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Place both EC2 instances in the same cluster placement group.
Option A is correct because placement groups provide low latency, high throughput networking. Option B is wrong because ENA is already recommended for enhanced networking. Option C is wrong because Elastic Fabric Adapter is for HPC, not general SAP. Option D is wrong because public IPs do not reduce latency within VPC.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
Enable Elastic Network Adapter (ENA) on both instances.
Why it's wrong here
ENA is already a best practice; it may not be the root cause.
✓
Place both EC2 instances in the same cluster placement group.
Why this is correct
Cluster placement groups provide low-latency, high-throughput networking between instances.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use Elastic Fabric Adapter (EFA) for network communication.
Why it's wrong here
EFA is for tightly coupled HPC workloads, not typical SAP.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
What to study next
Got this wrong? Here's your next step.
Identify which PAS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Technology — This question tests Technology — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Place both EC2 instances in the same cluster placement group. — Option A is correct because placement groups provide low latency, high throughput networking. Option B is wrong because ENA is already recommended for enhanced networking. Option C is wrong because Elastic Fabric Adapter is for HPC, not general SAP. Option D is wrong because public IPs do not reduce latency within VPC.
What should I do if I get this PAS-C01 question wrong?
Identify which PAS-C01 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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