Quick Answer
The answer is a VPC peering connection, which provides direct, private network connectivity between the SAP application and database tiers when they reside in separate VPCs. This component uses private IPv4 or IPv6 addresses to route traffic securely across the two VPCs without traversing the public internet, ensuring low-latency and high-bandwidth communication critical for SAP performance. On the AWS Certified SAP on AWS Specialty PAS-C01 exam, this question tests your understanding of multi-tier VPC connectivity patterns and the trade-offs between VPC peering, transit gateways, and VPNs—a common trap is choosing a transit gateway when only two VPCs need simple, direct connectivity. Remember that VPC peering is a one-to-one, non-transitive connection, so if you need to connect more than two VPCs or enable transitive routing, you would use a transit gateway instead. A helpful memory tip: “Peer for two, transit for through”—VPC peering directly links just two VPCs, while a transit gateway routes traffic through a central hub.
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.
A company is designing a multi-tier SAP architecture on AWS. They want to separate the SAP application tier and database tier into different subnets for security. Which AWS networking component should they use to connect the tiers?
AWS Direct Connect
Why wrong: Direct Connect is for on-premises connectivity.
VPC peering connection
VPC peering connects VPCs, allowing communication between tiers.
AWS Site-to-Site VPN
Why wrong: VPN is for on-premises, not VPC-to-VPC.
AWS Transit Gateway
Why wrong: Transit Gateway is for hub-and-spoke, overkill for two VPCs.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
VPC peering connection
Option B is correct because VPC peering connection allows direct network connectivity between two VPCs using private IPv4 or IPv6 addresses, enabling the SAP application tier and database tier to communicate securely across different subnets without traversing the public internet. This is a common pattern for multi-tier SAP architectures on AWS where each tier resides in its own VPC for isolation, and VPC peering provides low-latency, high-bandwidth connectivity ideal for SAP's performance requirements.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
AWS Direct Connect
Why it's wrong here
Direct Connect is for on-premises connectivity.
VPC peering connection
Why this is correct
VPC peering connects VPCs, allowing communication between tiers.
Related concept
Read the scenario before looking for a memorised answer.
AWS Site-to-Site VPN
Why it's wrong here
VPN is for on-premises, not VPC-to-VPC.
AWS Transit Gateway
Why it's wrong here
Transit Gateway is for hub-and-spoke, overkill for two VPCs.
Common exam traps
The trap here is that candidates may choose AWS Transit Gateway because they think it is required for any multi-VPC connectivity, but the question specifically asks for connecting only two tiers (two VPCs), where VPC peering is simpler, cheaper, and sufficient—Transit Gateway is only needed when connecting three or more VPCs or when transitive routing is required.
Detailed technical explanation
VPC peering uses the existing AWS infrastructure to route traffic between VPCs without any gateway or VPN appliance, leveraging the AWS global network for high throughput and low latency. It does not support transitive routing, meaning if VPC A is peered with VPC B and VPC B is peered with VPC C, VPC A cannot communicate with VPC C through VPC B—each pair must have a direct peering connection. In SAP environments, this non-transitive behavior is acceptable because the application and database tiers are typically only two VPCs, but it becomes a limitation in larger multi-VPC designs where Transit Gateway would be more appropriate.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
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FAQ
Design of SAP Workloads on AWS — This question tests Design of SAP Workloads on AWS — Read the scenario before looking for a memorised answer..
The correct answer is: VPC peering connection — Option B is correct because VPC peering connection allows direct network connectivity between two VPCs using private IPv4 or IPv6 addresses, enabling the SAP application tier and database tier to communicate securely across different subnets without traversing the public internet. This is a common pattern for multi-tier SAP architectures on AWS where each tier resides in its own VPC for isolation, and VPC peering provides low-latency, high-bandwidth connectivity ideal for SAP's performance requirements.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 24, 2026
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.
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