ANS-C01 Question 239
Select 3Your company uses an AWS Direct Connect connection to establish a private network connection between your on-premises data center and your AWS VPC. To ensure high availability for critical workloads, you are tasked with designing a resilient architecture. Which combination of configurations would provide the highest level of fault tolerance for your Direct Connect setup?
- A
Establish a second Direct Connect connection in a different AWS Direct Connect location.
- B
Enable Bidirectional Forwarding Detection (BFD) on your Direct Connect connections.
- C
Use AWS Direct Connect Gateway to connect multiple VPCs to a single Direct Connect connection.
- D
Configure a VPN connection as a backup to your Direct Connect connection.
- E
Increase the bandwidth of your existing Direct Connect connection.
Show answer and explanation
Correct answers: A, B, D
Explanation
To design a resilient architecture for Direct Connect, it is critical to consider redundancy and failover mechanisms. Establishing a second Direct Connect connection in a different location ensures physical diversity, while enabling BFD reduces downtime during link failures. Additionally, configuring a VPN as a backup provides an alternative route in case of a Direct Connect outage, ensuring high availability for critical workloads. Combining these approaches provides a robust and fault-tolerant solution.
- A. Correct.
Establishing a second Direct Connect connection in a different AWS Direct Connect location provides redundancy across physical connections and facilities, significantly improving fault tolerance.
- B. Correct.
Enabling Bidirectional Forwarding Detection (BFD) detects link failures quickly, minimizing downtime in case of a failure and improving resiliency.
- C. Incorrect.
Using AWS Direct Connect Gateway is useful for connecting multiple VPCs, but it does not enhance fault tolerance for the Direct Connect connection itself.
- D. Correct.
Configuring a VPN connection as a backup provides an alternate path in case the Direct Connect connection fails, ensuring continuity of service.
- E. Incorrect.
Increasing the bandwidth of your existing Direct Connect connection improves performance but does not contribute to fault tolerance or high availability.