- A
AWS Transit Gateway
AWS Transit Gateway is a network transit hub that connects VPCs, VPN connections, and AWS Direct Connect connections. It supports transitive routing, allowing all attached networks to communicate through a single gateway, which simplifies network architecture.
- B
Amazon Route 53
Why wrong: Amazon Route 53 is a scalable Domain Name System (DNS) web service. It resolves domain names to IP addresses but does not provide network routing between VPCs or on-premises networks.
- C
AWS Direct Connect Gateway
Why wrong: AWS Direct Connect Gateway allows a Direct Connect connection to access VPCs in any AWS Region, but it does not provide transitive routing between those VPCs. For VPC-to-VPC communication, additional components like Transit Gateway or VPC peering are needed.
- D
AWS PrivateLink
Why wrong: AWS PrivateLink provides private connectivity between VPCs and AWS services, or between VPCs and on-premises applications, but it does not offer transitive routing across multiple VPCs or act as a central hub for network traffic.
Quick Answer
The answer is AWS Transit Gateway, because it serves as a central hub that enables transitive routing between multiple VPCs and on-premises networks, eliminating the need for complex peering or VPN mesh configurations. By acting as a single point of connectivity, Transit Gateway simplifies the routing topology for multi-region and hybrid architectures, supporting thousands of VPC attachments while allowing traffic to flow seamlessly between all connected networks. On the AWS Certified Cloud Practitioner CLF-C02 exam, this question tests your understanding of how to consolidate network connectivity at scale; a common trap is confusing Transit Gateway with VPC Peering, which only supports one-to-one connections without transitive routing. Remember the memory tip: “Transit Gateway is the hub that lets VPCs and on-premises talk through one door,” contrasting with VPC Peering’s point-to-point limitations.
CLF-C02 Cloud Technology and Services Practice Question
This CLF-C02 practice question tests your understanding of cloud technology and services. 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 runs a multi-region application on AWS with separate VPCs in us-east-1 and eu-west-1. The company also has an on-premises data center connected to AWS via AWS Direct Connect. The network team wants to simplify the routing topology so that traffic between all VPCs and the on-premises network flows through a central hub. They need a service that can manage many VPC attachments and provide transitive routing across all connected networks. Which AWS service should the network team use?
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
AWS Transit Gateway
AWS Transit Gateway is the correct choice because it acts as a central hub that connects multiple VPCs and on-premises networks via a single gateway, enabling transitive routing between all attached networks. It supports many VPC attachments (up to thousands per gateway) and simplifies routing topology by eliminating the need for complex peering or VPN mesh configurations. This directly meets the requirement for a service that manages many VPC attachments and provides transitive routing across all connected networks.
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.
- ✓
AWS Transit Gateway
Why this is correct
AWS Transit Gateway is a network transit hub that connects VPCs, VPN connections, and AWS Direct Connect connections. It supports transitive routing, allowing all attached networks to communicate through a single gateway, which simplifies network architecture.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Amazon Route 53
Why it's wrong here
Amazon Route 53 is a scalable Domain Name System (DNS) web service. It resolves domain names to IP addresses but does not provide network routing between VPCs or on-premises networks.
- ✗
AWS Direct Connect Gateway
Why it's wrong here
AWS Direct Connect Gateway allows a Direct Connect connection to access VPCs in any AWS Region, but it does not provide transitive routing between those VPCs. For VPC-to-VPC communication, additional components like Transit Gateway or VPC peering are needed.
- ✗
AWS PrivateLink
Why it's wrong here
AWS PrivateLink provides private connectivity between VPCs and AWS services, or between VPCs and on-premises applications, but it does not offer transitive routing across multiple VPCs or act as a central hub for network traffic.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse AWS Direct Connect Gateway with Transit Gateway, assuming Direct Connect Gateway can provide transitive routing between VPCs, but it only connects Direct Connect circuits to multiple VPCs and does not enable VPC-to-VPC routing or act as a central hub for all network attachments.
Detailed technical explanation
How to think about this question
AWS Transit Gateway uses a hub-and-spoke architecture where each VPC or on-premises network attaches to the gateway via a VPC attachment or VPN attachment, and routing is managed through route tables that can propagate and filter routes. Under the hood, Transit Gateway leverages AWS's internal network infrastructure to forward traffic between attachments without traversing the public internet, supporting protocols like BGP for dynamic route exchange with on-premises networks. In a real-world scenario, a company with dozens of VPCs across multiple regions can use a single Transit Gateway in a central region (e.g., us-east-1) and peer it with another Transit Gateway in eu-west-1 to enable inter-region transitive routing, all while maintaining a simplified routing topology.
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.
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FAQ
Questions learners often ask
What does this CLF-C02 question test?
Cloud Technology and Services — This question tests Cloud Technology and Services — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: AWS Transit Gateway — AWS Transit Gateway is the correct choice because it acts as a central hub that connects multiple VPCs and on-premises networks via a single gateway, enabling transitive routing between all attached networks. It supports many VPC attachments (up to thousands per gateway) and simplifies routing topology by eliminating the need for complex peering or VPN mesh configurations. This directly meets the requirement for a service that manages many VPC attachments and provides transitive routing across all connected networks.
What should I do if I get this CLF-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: Jun 11, 2026
This CLF-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 CLF-C02 exam.
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