- A
AWS Site-to-Site VPN
Why wrong: AWS Site-to-Site VPN establishes encrypted tunnels over the public internet, which does not meet the requirement for a dedicated private connection that avoids the internet.
- B
AWS Direct Connect
AWS Direct Connect provides a dedicated, private physical link from an on-premises data center to AWS, ensuring low latency, high throughput, and no traversal of the public internet.
- C
Amazon VPC peering
Why wrong: Amazon VPC peering connects two VPCs within AWS; it does not extend to on-premises environments and therefore cannot connect the company's data center to AWS.
- D
AWS Transit Gateway
Why wrong: AWS Transit Gateway acts as a central hub for interconnecting VPCs and on-premises networks via VPN or Direct Connect, but it does not itself provide a dedicated connection to on-premises. It would still require Direct Connect to achieve the stated requirement.
Quick Answer
The answer is AWS Direct Connect, the correct choice because it establishes a dedicated private network connection to AWS that bypasses the public internet entirely, delivering the consistent low latency and high throughput required for real-time replication of large market data volumes to Amazon S3. Unlike VPN-based options that still traverse the internet, Direct Connect uses private physical links provisioned over industry-standard 802.1Q VLANs, ensuring predictable performance and security for mission-critical workloads. On the AWS Certified Cloud Practitioner CLF-C02 exam, this scenario tests your ability to distinguish between hybrid connectivity services: Direct Connect for private, low-latency needs versus Site-to-Site VPN for encrypted but internet-dependent connections. A common trap is choosing VPN because it’s also private, but remember that VPN still routes over the public internet, which can introduce variable latency. Memory tip: think “Direct” for “Dedicated, Internet-free, Reliable, Consistent, and High-throughput.”
CLF-C02 Cloud Technology and Services Practice Question
This CLF-C02 practice question tests your understanding of cloud technology and services. 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.
A financial analytics company runs a mission-critical application in its on-premises data center. The application must replicate large volumes of market data to Amazon S3 in real time. The company requires a dedicated, private network connection with consistent low latency and high throughput. The connection must not traverse the public internet. Which AWS service should the company use to meet these requirements?
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 Direct Connect
AWS Direct Connect provides a dedicated, private network connection from an on-premises data center to AWS, bypassing the public internet. This ensures consistent low latency and high throughput, which is essential for replicating large volumes of market data in real time. The connection uses industry-standard 802.1Q VLANs and can be provisioned at speeds up to 100 Gbps, meeting the requirement for a private, high-performance link.
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 Site-to-Site VPN
Why it's wrong here
AWS Site-to-Site VPN establishes encrypted tunnels over the public internet, which does not meet the requirement for a dedicated private connection that avoids the internet.
- ✓
AWS Direct Connect
Why this is correct
AWS Direct Connect provides a dedicated, private physical link from an on-premises data center to AWS, ensuring low latency, high throughput, and no traversal of the public internet.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Amazon VPC peering
Why it's wrong here
Amazon VPC peering connects two VPCs within AWS; it does not extend to on-premises environments and therefore cannot connect the company's data center to AWS.
- ✗
AWS Transit Gateway
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse AWS Site-to-Site VPN as a private connection because it is encrypted, but it still traverses the public internet and lacks the dedicated, low-latency characteristics of Direct Connect.
Detailed technical explanation
How to think about this question
AWS Direct Connect operates over single-mode fiber using 1000BASE-LX (1 Gbps) or 10GBASE-LR (10 Gbps) optics, and supports jumbo frames (MTU 9001) to reduce overhead for large data transfers. The connection uses Border Gateway Protocol (BGP) for routing, with the customer advertising prefixes via BGP sessions over the private virtual interface (VLAN). In real-world scenarios, financial firms often use Direct Connect with multiple redundant connections across different locations to achieve sub-millisecond latency and 99.99% availability for market data replication.
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 media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
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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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 Direct Connect — AWS Direct Connect provides a dedicated, private network connection from an on-premises data center to AWS, bypassing the public internet. This ensures consistent low latency and high throughput, which is essential for replicating large volumes of market data in real time. The connection uses industry-standard 802.1Q VLANs and can be provisioned at speeds up to 100 Gbps, meeting the requirement for a private, high-performance link.
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.
About these practice questions
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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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