This ANS-C01 practice question tests your understanding of network design. 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 is designing a hybrid network architecture that connects an on-premises data center to AWS using AWS Direct Connect. The company wants to ensure high availability and avoid a single point of failure. The on-premises router connects to two separate AWS Direct Connect locations. Which configuration should be used to meet these requirements?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Create two Direct Connect connections, each with a private VIF, and connect them to a Direct Connect gateway that is associated with a Transit VPC.
Option C is correct because it uses two separate Direct Connect connections, each with a private VIF, both attached to a Direct Connect gateway. This eliminates a single point of failure at the connection level and, when combined with a Transit VPC, provides redundant, highly available connectivity from the on-premises data center to multiple VPCs. The Direct Connect gateway aggregates the private VIFs and allows traffic to be forwarded to the Transit VPC, which then routes to the attached VPCs, ensuring no single component failure disrupts the hybrid network.
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.
✗
Create two private VIFs on the same Direct Connect connection and connect each to a different VPC.
Why it's wrong here
Both VIFs share the same physical connection.
✗
Create a single private virtual interface (VIF) on one Direct Connect connection and connect it to a single VPC.
Why it's wrong here
Single point of failure.
✓
Create two Direct Connect connections, each with a private VIF, and connect them to a Direct Connect gateway that is associated with a Transit VPC.
Why this is correct
Provides redundancy with two separate connections and a Transit VPC.
Related concept
Read the scenario before looking for a memorised answer.
✗
Create a Direct Connect gateway and attach a single private VIF from one connection.
Why it's wrong here
Single point of failure.
Common exam traps
Common exam trap: answer the scenario, not the keyword
AWS often tests the misconception that multiple VIFs on a single connection or a single VIF attached to a Direct Connect gateway provide high availability, but the trap is that the physical connection itself remains a single point of failure unless two separate Direct Connect connections are used.
Detailed technical explanation
How to think about this question
Under the hood, a Direct Connect gateway acts as a regional, highly available virtual router that can terminate up to 10 private VIFs from different Direct Connect connections, enabling BGP multipath for load balancing and failover. In a Transit VPC architecture, the Direct Connect gateway forwards traffic to the Transit VPC's VPN or Direct Connect attachment, which then uses transitive routing to reach multiple VPCs, avoiding the need for individual VPC attachments. A real-world scenario where this matters is a financial services company requiring sub-second failover between two Direct Connect locations; the combination of BGP AS_PATH prepending and local preference on the on-premises router can influence traffic flow across the redundant paths.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
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.
Network Design — This question tests Network Design — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Create two Direct Connect connections, each with a private VIF, and connect them to a Direct Connect gateway that is associated with a Transit VPC. — Option C is correct because it uses two separate Direct Connect connections, each with a private VIF, both attached to a Direct Connect gateway. This eliminates a single point of failure at the connection level and, when combined with a Transit VPC, provides redundant, highly available connectivity from the on-premises data center to multiple VPCs. The Direct Connect gateway aggregates the private VIFs and allows traffic to be forwarded to the Transit VPC, which then routes to the attached VPCs, ensuring no single component failure disrupts the hybrid network.
What should I do if I get this ANS-C01 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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