The answer is AWS Transit Gateway with a central VPC as the hub, and VPC peering configured in a full mesh. These are the two valid methods to connect multiple VPCs together in a hub-and-spoke topology while maintaining centralized control because the Transit Gateway acts as a single, scalable router that simplifies management and enforces routing policies from one point, whereas a full mesh of VPC peering connections, though less centralized, still allows each VPC to communicate directly without a single point of failure. On the AWS Certified Advanced Networking Specialty ANS-C01 exam, this question tests your understanding of how to implement centralized network control versus distributed connectivity; a common trap is confusing Direct Connect or VPN attachments, which are for hybrid networking, with VPC-to-VPC methods. Remember the mnemonic “TGW for hub, Peering for mesh” to keep the two valid hub-and-spoke connectivity methods straight.
ANS-C01 Network Implementation Practice Question
This ANS-C01 practice question tests your understanding of network implementation. 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 TWO of the following are valid methods to connect multiple VPCs together in a hub-and-spoke topology while maintaining centralized control? (Choose two.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Establish VPC peering connections in a full mesh and manage routes centrally.
Correct: A (Transit Gateway with central VPC) and D (VPC peering with full mesh) are valid hub-and-spoke methods. B is wrong because VPNs are not typically used for VPC-to-VPC. C is wrong because VPC endpoints are for connecting to AWS services, not VPCs. E is wrong because Direct Connect is for on-premises, not VPC-to-VPC.
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.
✗
Create a VPN connection between each VPC and a central VPN appliance.
Why it's wrong here
Complex and not scalable.
✓
Establish VPC peering connections in a full mesh and manage routes centrally.
Read the scenario before looking for a memorised answer.
✗
Use Direct Connect to connect VPCs.
Why it's wrong here
Direct Connect is for on-premises.
✓
Use an AWS Transit Gateway with a central VPC as the hub.
Why this is correct
Native hub-and-spoke architecture.
Related concept
Read the scenario before looking for a memorised answer.
✗
Use VPC Gateway Endpoints to connect VPCs.
Why it's wrong here
Endpoints are for AWS services.
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 ANS-C01 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.
Network Implementation — This question tests Network Implementation — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Establish VPC peering connections in a full mesh and manage routes centrally. — Correct: A (Transit Gateway with central VPC) and D (VPC peering with full mesh) are valid hub-and-spoke methods. B is wrong because VPNs are not typically used for VPC-to-VPC. C is wrong because VPC endpoints are for connecting to AWS services, not VPCs. E is wrong because Direct Connect is for on-premises, not VPC-to-VPC.
What should I do if I get this ANS-C01 question wrong?
Identify which ANS-C01 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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Question Discussion
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