ANS-C01 Network Design Practice Question
A company is using AWS Direct Connect to connect its on-premises data center to a VPC. They want to ensure high availability and failover. Which TWO configurations should they implement? (Select TWO.)
⚠ Common exam trap
Test-takers frequently think multiple virtual interfaces or VLANs on a single connection provide redundancy, but they fail to recognize that the physical link itself remains a single point of failure.
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
✓
Configure a Site-to-Site VPN connection as a backup.
A Site-to-Site VPN over the internet provides a cost-effective, diverse backup path if the Direct Connect connection fails. This ensures high availability by using a different physical medium and network path, allowing traffic to failover automatically via BGP route propagation when the Direct Connect link goes down.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Configure a Site-to-Site VPN connection as a backup.
Why this is correct
Correct: Provides failover over internet.
- ✗
Create a Direct Connect Gateway and attach multiple VPCs.
Why it's wrong here
Wrong: Does not provide high availability.
- ✗
Use a single Direct Connect connection with two virtual interfaces.
Why it's wrong here
Wrong: Single physical connection is a SPOF.
- ✓
Provision a second Direct Connect connection at a different location.
Why this is correct
Correct: Provides physical diversity.
- ✗
Use the same Direct Connect connection with multiple VLANs.
Why it's wrong here
Wrong: Still single point of failure.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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