The answer is AWS Site-to-Site VPN, along with AWS Direct Connect and a Transit Gateway with a VPN attachment. These three are valid options for connecting a VPC to an on-premises network because each establishes a secure, dedicated, or hybrid link between your AWS cloud environment and your local data center. A Site-to-Site VPN uses IPsec tunnels over the public internet, Direct Connect provides a private, low-latency physical connection, and a Transit Gateway acts as a central hub that can terminate multiple VPN attachments, enabling scalable and centralized routing between VPCs and on-premises networks. On the AWS Certified SysOps Administrator Associate SOA-C02 exam, this topic tests your understanding of hybrid networking architectures and the trade-offs between cost, security, and performance. A common trap is confusing a VPC Peering connection, which only connects VPCs within AWS, with an on-premises link—remember that peering cannot extend to your data center. Memory tip: think of the three C’s—Cloud VPN, Cable (Direct Connect), and Central Hub (Transit Gateway).
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.
Which THREE of the following are valid options for connecting a VPC to an on-premises network? (Select THREE.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Transit gateway with VPN attachment
A Transit Gateway with a VPN attachment allows you to connect your VPC to an on-premises network by acting as a central hub that interconnects VPCs and on-premises networks via IPsec VPN tunnels. This is a valid option because the Transit Gateway can terminate multiple VPN connections, enabling hybrid connectivity with centralized routing and scalability.
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.
✓
Transit gateway with VPN attachment
Why this is correct
A transit gateway can connect multiple VPCs and on-premises networks via VPN.
Related concept
Read the scenario before looking for a memorised answer.
✓
AWS Direct Connect
Why this is correct
Direct Connect provides a dedicated private connection from on-premises to AWS.
Related concept
Read the scenario before looking for a memorised answer.
✗
VPC peering
Why it's wrong here
VPC peering connects VPCs, not on-premises networks.
✓
AWS Site-to-Site VPN
Why this is correct
Site-to-Site VPN creates a secure connection between a VPC and an on-premises network.
Related concept
Read the scenario before looking for a memorised answer.
✗
VPC endpoint
Why it's wrong here
VPC endpoints allow private access to AWS services, not on-premises connectivity.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse VPC peering (which only connects VPCs) with hybrid connectivity options, or mistakenly think VPC endpoints can extend to on-premises networks, when they are strictly for accessing AWS services privately within a VPC.
Detailed technical explanation
How to think about this question
Transit Gateway uses a dynamic routing protocol (BGP) over the VPN attachment to exchange routes with the on-premises network, enabling automatic failover and load balancing across multiple tunnels. AWS Direct Connect provides a dedicated, low-latency connection over Ethernet VLANs (802.1Q) that bypasses the public internet, while Site-to-Site VPN uses IPsec tunnels over the internet with BGP for route propagation. In real-world scenarios, organizations often combine Direct Connect with a Site-to-Site VPN as a backup for high availability.
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.
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: Transit gateway with VPN attachment — A Transit Gateway with a VPN attachment allows you to connect your VPC to an on-premises network by acting as a central hub that interconnects VPCs and on-premises networks via IPsec VPN tunnels. This is a valid option because the Transit Gateway can terminate multiple VPN connections, enabling hybrid connectivity with centralized routing and scalability.
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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Question Discussion
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