ANS-C01 Network Design Practice Question
A company is designing a hybrid network using AWS Direct Connect. The company wants to use the same Direct Connect connection to access both VPC resources and public AWS services (such as S3 and DynamoDB) from its on-premises network. Which THREE components are required to meet this goal? (Choose three.)
⚠ Common exam trap
It's easy for candidates to think a Transit Gateway is required for multi-VPC or hybrid access, but for a single Direct Connect connection to access both VPCs and public services, the essential components are the private VIF, public VIF, and Direct Connect Gateway, not the Transit Gateway.
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
✓
Private virtual interface (VIF)
A private virtual interface (VIF) is required to connect your on-premises network to a VPC via Direct Connect. However, to also access public AWS services like S3 and DynamoDB over the same Direct Connect connection, you need a public VIF (Option E) for public endpoint connectivity and a Direct Connect Gateway (Option C) to enable transitive routing between the private VIF and multiple VPCs or to simplify the architecture. Together, these three components allow a single Direct Connect connection to serve both private VPC resources and public AWS services.
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 it's wrong here
AWS Transit Gateway does not provide the public VIF or Direct Connect gateway attachment needed to route traffic from a Direct Connect connection to public AWS services like S3 and DynamoDB; it only interconnects VPCs and VPNs. It is tempting because Transit Gateway centralises VPC routing, which would be correct if the goal were to connect multiple VPCs over a single Direct Connect private VIF, but the stem requires public service access.
- ✓
Private virtual interface (VIF)
Why this is correct
Correct; private VIF connects to VPCs.
- ✓
Direct Connect Gateway
Why this is correct
Correct; Direct Connect Gateway allows association of private VIF with multiple VPCs.
- ✗
AWS Site-to-Site VPN connection
Why it's wrong here
Incorrect; VPN is not needed when using Direct Connect.
- ✓
Public virtual interface (VIF)
Why this is correct
Correct; public VIF provides access to public AWS services.
Quick reference
AWS S3 Storage Class Comparison
| Storage Class | Min Duration | Retrieval | Use Case |
|---|---|---|---|
| S3 Standard | None | Immediate | Frequently accessed data |
| S3 Standard-IA | 30 days | Immediate | Infrequent access, rapid retrieval |
| S3 One Zone-IA | 30 days | Immediate | Non-critical infrequent data |
| S3 Intelligent-Tiering | None | Immediate–hours | Unknown or changing access patterns |
| S3 Glacier Instant | 90 days | Milliseconds | Archive with instant retrieval |
| S3 Glacier Flexible | 90 days | Minutes–hours | Archive, flexible retrieval |
| S3 Glacier Deep Archive | 180 days | Hours | Long-term compliance archive |
Go deeper
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This ANS-C01 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 ANS-C01 exam.