The answer is security groups, network ACLs, and VPC peering. Security groups act as a virtual firewall at the instance level, allowing you to restrict traffic between SAP application servers and the HANA database to only the required ports and protocols, while network ACLs provide a stateless, subnet-level filtering layer that adds defense in depth for the entire communication path. VPC peering then enables secure, private connectivity across different VPCs without traversing the public internet, which is critical when your SAP and HANA tiers reside in separate VPCs on AWS. On the PAS-C01 exam, this question tests your understanding of network segmentation and the shared responsibility model for securing SAP on AWS, with a common trap being to confuse AWS Shield (a DDoS service) or Direct Connect (a connectivity service) with traffic security controls. Remember the mnemonic “S-N-P” for Security groups, Network ACLs, and Peering—these are the three native AWS tools that directly secure the data plane between your SAP app and HANA database.
PAS-C01 Design of SAP Workloads on AWS Practice Question
This PAS-C01 practice question tests your understanding of design of sap workloads on aws. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
Which THREE of the following are valid methods to secure network traffic between SAP application servers and the SAP HANA database on AWS? (Choose three.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use VPC peering to connect different VPCs securely.
Options A, B, and D are correct. A is correct because security groups act as a virtual firewall. B is correct because NACLs provide stateless filtering at the subnet level. D is correct because VPC peering enables secure connectivity. C is incorrect because AWS Shield is for DDoS protection, not network traffic security. E is incorrect because Direct Connect is for connectivity, not security.
Key principle: Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
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 VPC peering to connect different VPCs securely.
Common exam trap: usable hosts are not the same as total addresses
Subnetting questions often tempt you into counting all addresses. In normal IPv4 subnets, the network and broadcast addresses are not usable host addresses.
Detailed technical explanation
How to think about this question
Subnetting questions test whether you can identify the network, broadcast address, usable range, mask and correct subnet. Slow down enough to calculate the block size correctly.
KKey Concepts to Remember
CIDR notation defines the prefix length.
Block size helps identify subnet boundaries.
Network and broadcast addresses are not usable hosts in normal IPv4 subnets.
The required host count determines the smallest suitable subnet.
TExam Day Tips
→Write the block size before choosing the subnet.
→Check whether the question asks for hosts, subnets or a specific address range.
→Do not confuse /24, /25, /26 and /27 host counts.
Key takeaway
Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
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.
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related PAS-C01 subnetting questions on CIDR, address ranges, and subnet selection.
Design of SAP Workloads on AWS — This question tests Design of SAP Workloads on AWS — CIDR notation defines the prefix length..
What is the correct answer to this question?
The correct answer is: Use VPC peering to connect different VPCs securely. — Options A, B, and D are correct. A is correct because security groups act as a virtual firewall. B is correct because NACLs provide stateless filtering at the subnet level. D is correct because VPC peering enables secure connectivity. C is incorrect because AWS Shield is for DDoS protection, not network traffic security. E is incorrect because Direct Connect is for connectivity, not security.
What should I do if I get this PAS-C01 question wrong?
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related PAS-C01 subnetting questions on CIDR, address ranges, and subnet selection.
What is the key concept behind this question?
CIDR notation defines the prefix length.
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Question Discussion
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