SAP-C02 Practice Question: Design Solutions for Organizational Complexity
A global company uses AWS Organizations with multiple business units. Each business unit has its own OU and VPCs that need to communicate with a central shared services VPC. The network team wants to minimize latency and maximize throughput. Which design should they use?
⚠ Common exam trap
It's easy for candidates to choose VPC peering (D) due to its simplicity and zero additional cost, overlooking the management overhead and lack of transitive routing when scaling across many VPCs, while Transit Gateway provides a centralized, high-performance solution that aligns with the requirements for minimizing latency and maximizing throughput.
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
✓
Deploy an AWS Transit Gateway and attach all VPCs (business unit and shared services) to it.
AWS Transit Gateway acts as a hub-and-spoke router, allowing all VPCs (business units and shared services) to connect through a single gateway. This minimizes latency by using the AWS global network backbone and maximizes throughput with up to 50 Gbps per VPC attachment, scaling horizontally across multiple attachments. It simplifies management compared to mesh peering and avoids the bandwidth limitations of VPN or PrivateLink for inter-VPC routing.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Create a VPN connection from each business unit VPC to the shared services VPC.
Why it's wrong here
VPNs add latency and reduce throughput compared to direct VPC connections via Transit Gateway.
- ✓
Deploy an AWS Transit Gateway and attach all VPCs (business unit and shared services) to it.
Why this is correct
Transit Gateway acts as a hub for transitive routing, simplifying network management and providing high bandwidth.
- ✗
Use AWS PrivateLink to connect services in the shared services VPC to the business unit VPCs.
Why it's wrong here
PrivateLink is for accessing specific services, not for general VPC-to-VPC routing; it does not provide full network connectivity.
- ✗
Set up VPC peering between each business unit VPC and the shared services VPC.
Why it's wrong here
VPC peering does not support transitive routing; each pair must be explicitly peered and route tables updated, leading to complexity and potential routing issues.
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Same concept, more angles
1 more way this is tested on SAP-C02
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A company has a centralized networking team that manages a shared VPC with multiple AWS Transit Gateway attachments. Application teams create VPCs in separate AWS accounts and want to connect to the shared VPC. The networking team needs to ensure that only authorized VPCs can connect to the shared VPC. What is the MOST secure and scalable way to manage this?
medium- A.Use a VPN connection from each application VPC to the shared VPC.
- ✓ B.Use AWS Resource Access Manager to share the Transit Gateway with the application accounts.
- C.Use VPC peering between the shared VPC and each application VPC.
- D.Create IAM roles in each application account that allow the networking team to create VPC attachments.
Why B: AWS Resource Access Manager (RAM) allows the centralized networking team to share the Transit Gateway with specific application accounts, enabling authorized VPCs to create attachments without exposing the resource to all accounts. This approach is secure because it uses resource-based policies to grant access only to designated accounts, and scalable because it avoids the administrative overhead of managing individual VPNs or VPC peering connections as the number of application VPCs grows.
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This SAP-C02 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 SAP-C02 exam.