- A
Set up AWS Direct Connect and route through a single VPC.
Why wrong: Direct Connect is not designed for VPC-to-VPC connectivity.
- B
Use AWS PrivateLink to connect the VPCs.
Why wrong: PrivateLink is for accessing services across VPCs via NLB, not for general routing.
- C
Create a Transit Gateway and attach all VPCs.
Transit Gateway acts as a hub-and-spoke model for scalable VPC connectivity.
- D
Create VPC Peering connections between each pair of VPCs.
Why wrong: Peering is point-to-point and doesn't scale well; requires full mesh.
Question 773 of 1,546
SOA-C02 Networking and Content Delivery Practice Question
This SOA-C02 practice question tests your understanding of networking and content delivery. 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.
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 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
✓
Create a Transit Gateway and attach all VPCs.
AWS Transit Gateway acts as a central hub that allows you to attach multiple VPCs and manage inter-VPC routing through a single gateway, simplifying connectivity and scaling easily as you add more VPCs. It eliminates the need for complex mesh or star configurations and supports transitive routing, making it the simplest and most scalable solution for multi-VPC communication within the same region.
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
The trap here is that candidates often confuse VPC Peering as the simplest solution for a few VPCs, but the question emphasizes scalability, and Transit Gateway is the only option that provides transitive routing without a full mesh of connections.
Detailed technical explanation
How to think about this question
AWS Transit Gateway uses a hub-and-spoke model with a central router that manages routing tables and attachments, supporting up to 5,000 VPC attachments per gateway and 50 Gbps per attachment (burstable to higher). It leverages the AWS global network for low-latency traffic and supports multicast, VPN, and Direct Connect integrations, making it ideal for large-scale multi-VPC architectures. In contrast, VPC Peering requires explicit route table entries for each pair and cannot propagate routes transitively, leading to operational overhead as the network grows.
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.
TExam Day Tips
- 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 exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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Networking and Content Delivery — study guide chapter
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FAQ
Questions learners often ask
What does this SOA-C02 question test?
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. — AWS Transit Gateway acts as a central hub that allows you to attach multiple VPCs and manage inter-VPC routing through a single gateway, simplifying connectivity and scaling easily as you add more VPCs. It eliminates the need for complex mesh or star configurations and supports transitive routing, making it the simplest and most scalable solution for multi-VPC communication within the same region.
What should I do if I get this SOA-C02 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jul 4, 2026
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