The answer is to create a Transit Gateway and attach all VPCs. This solution provides the simplest and most scalable connectivity because a Transit Gateway acts as a central hub, allowing you to manage many VPCs with a single routing configuration rather than creating a mesh of one-to-one VPC peering connections. On the AWS Certified SysOps Administrator Associate SOA-C02 exam, this question tests your understanding of network architecture trade-offs; a common trap is choosing VPC Peering for its simplicity with two VPCs, but it becomes unmanageable as the number of VPCs grows. Remember the memory tip: "Peering is for pairs, Transit is for teams"—when you need to scale VPC connectivity across multiple VPCs in the same region, the hub-and-spoke model of Transit Gateway is the correct choice.
SOA-C02 Networking and Content Delivery Practice Question
This SOA-C02 practice question tests your understanding of networking and content delivery. 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 has multiple VPCs in the same account that need to communicate with each other. The VPCs are in the same region. Which solution provides the simplest and most scalable connectivity?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create a Transit Gateway and attach all VPCs.
Option A is correct because a Transit Gateway allows you to connect multiple VPCs and on-premises networks through a central hub, simplifying management. Option B is incorrect because VPC Peering is a one-to-one connection and becomes complex with many VPCs. Option C is incorrect because Direct Connect is for on-premises connectivity, not VPC-to-VPC. Option D is incorrect because PrivateLink is for exposing services, not general VPC connectivity.
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.
✗
Set up AWS Direct Connect and route through a single VPC.
Why it's wrong here
Direct Connect is not designed for VPC-to-VPC connectivity.
✗
Use AWS PrivateLink to connect the VPCs.
Why it's wrong here
PrivateLink is for accessing services across VPCs via NLB, not for general routing.
✓
Create a Transit Gateway and attach all VPCs.
Why this is correct
Transit Gateway acts as a hub-and-spoke model for scalable VPC connectivity.
Related concept
Read the scenario before looking for a memorised answer.
✗
Create VPC Peering connections between each pair of VPCs.
Why it's wrong here
Peering is point-to-point and doesn't scale well; requires full mesh.
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 SOA-C02 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.
Networking and Content Delivery — This question tests Networking and Content Delivery — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create a Transit Gateway and attach all VPCs. — Option A is correct because a Transit Gateway allows you to connect multiple VPCs and on-premises networks through a central hub, simplifying management. Option B is incorrect because VPC Peering is a one-to-one connection and becomes complex with many VPCs. Option C is incorrect because Direct Connect is for on-premises connectivity, not VPC-to-VPC. Option D is incorrect because PrivateLink is for exposing services, not general VPC connectivity.
What should I do if I get this SOA-C02 question wrong?
Identify which SOA-C02 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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This SOA-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 SOA-C02 exam.
Question Discussion
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