Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company runs multiple workloads in separate Amazon VPCs within the same AWS Region. The networking team needs to enable connectivity between all VPCs using private IP addresses. Additionally, the team must connect all VPCs to the company's on-premises data center through a single AWS Site-to-Site VPN connection to minimize costs and simplify management. The solution must support transitive routing so that any VPC can communicate with any other VPC and with the on-premises network. Which AWS service should the networking team use to meet these requirements?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Distractor review
VPC Peering with a VPN attachment to a Virtual Private Gateway
VPC Peering does not support transitive routing; each VPC would need a separate peering connection to every other VPC, and a VPN attachment to a Virtual Private Gateway connects only that single VPC to the on-premises network. This solution does not provide transitive connectivity between all VPCs and the on-premises data center through a single VPN connection.
B
Best answer
AWS Transit Gateway with VPN attachments
Correct. AWS Transit Gateway acts as a central hub, enabling transitive routing between all attached VPCs and VPN connections. By attaching a single Site-to-Site VPN to the Transit Gateway, all VPCs can communicate with each other and with the on-premises network using private IP addresses, simplifying management and reducing costs.
C
Distractor review
AWS Direct Connect gateway with VPC associations
AWS Direct Connect gateway is used to associate a Direct Connect dedicated connection with multiple VPCs, but it does not provide transitive routing between VPCs by itself. It also does not support Site-to-Site VPN connections as the primary method; Direct Connect is a dedicated physical connection, not a VPN.
D
Distractor review
A Network Load Balancer with VPN endpoints
A Network Load Balancer is designed to distribute incoming traffic across targets, not to interconnect VPCs or to provide VPN connectivity. It does not support routing between VPCs or transcending VPC boundaries in the manner required.
Common exam trap
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.
Technical deep dive
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.
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More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A developer needs to launch a test server for a new application prototype. The developer logs into the AWS Management Console, selects an Amazon EC2 instance type, configures the security group, and starts the instance. The instance is running within two minutes, and the developer did not need to submit a formal request to the company's IT procurement team or wait for approval from a cloud administrator. Which essential characteristic of cloud computing does this scenario best demonstrate?
Question 2
A solutions architect is planning a new web application on AWS. The workload will include 3 Amazon EC2 instances (t3.medium) running 24/7, an Application Load Balancer, and an Amazon RDS for MySQL db.t3.small database. The architect needs to estimate the monthly cost for the first year, considering different purchasing options (On-Demand, 1-year All Upfront Reserved Instance, and Compute Savings Plan). Which AWS tool should the architect use to create this estimate?
Question 3
A company's development team frequently needs temporary test environments. A developer can log into the AWS Management Console, select an Amazon EC2 instance type, configure storage, and launch the instance within minutes without any interaction with the IT infrastructure team. This capability is an example of which essential characteristic of cloud computing?
Question 4
A company's finance team needs to analyze AWS spending in detail. They require a report that includes hourly cost data for each AWS service, each individual resource (e.g., a specific EC2 instance), and any cost allocation tags applied. The team plans to export this data to an Amazon S3 bucket and then import it into a custom business intelligence (BI) analytics dashboard. Which AWS tool should the finance team use to generate this level of detailed cost data?
Question 5
A company uses AWS for its development environment. The finance team wants to set a monthly budget of $10,000. They want to receive an email notification when the actual costs reach 80% of the budget ($8,000) and again when costs exceed the budget. The team needs a managed AWS service that can automatically send these alerts without requiring custom code or third-party tools. Which AWS service should the team use?
Question 6
A company uses AWS Organizations to manage multiple accounts. The security team needs to enforce a policy that restricts SSH access (port 22) from the internet (0.0.0.0/0) in all VPCs across all accounts. The team wants to centrally define the allowed rules and automatically apply them to newly created VPCs and security groups, while also automatically remediating any existing non-compliant security groups. Which AWS service should the team use?
FAQ
Questions learners often ask
What does this CLF-C02 question test?
Read the scenario before looking for a memorised answer.
What is the correct answer to this question?
The correct answer is: AWS Transit Gateway with VPN attachments — AWS Transit Gateway acts as a central hub that interconnects VPCs and on-premises networks through a single gateway. It supports transitive routing, meaning that traffic from one VPC can be routed to another VPC or to the on-premises network via the Transit Gateway without needing individual VPC peering connections or multiple VPN tunnels. This simplifies management and reduces costs compared to creating a full mesh of VPC peering connections and separate VPN attachments for each VPC.
What should I do if I get this CLF-C02 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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