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Direct Connect Resiliency

5 minutes 5 Questions

Direct Connect resiliency refers to the redundancy and availability of your AWS Direct Connect connections. To ensure high availability and fault tolerance, it is essential to design redundant and diverse network architectures. AWS Direct Connect supports resiliency by allowing you to deploy multiple connections and redundant virtual interfaces. For example, you can use multiple direct connect locations, diversely routed AWS Direct Connect circuits, or alternate paths through AWS Direct Connect partners. Creating a resilient network design using AWS Direct Connect helps you minimize downtime, maintain redundancy, and improve failover capabilities to ensure continuous operation of your applications and services hosted in AWS.

Guide to AWS Direct Connect Resiliency Concept

AWS Direct Connect Resiliency is a design consideration for AWS networks. It provides enhanced network performance.

Importance: Direct Connect Resiliency is vital for high-speed, reliable, and secure connections between your network and AWS. It helps in disaster recovery, reduces network costs, and provides consistent network performance.

What it is: It is a strategy for setting up redundant and diverse connections to AWS cloud for a more resilient network architecture.

How it works: Using redundant connections, from different Direct Connect locations, it ensures the continuation of data transfer if one connection fails.

Exam Tips - Answering Questions on Direct Connect Resiliency: Understand the advantages and purpose of Direct Connect Resiliency for enhanced network performance Knowledge on how to set up multiple redundant connections to different AWS regions would be beneficial in answering questions related to Direct Connect Resiliency.
Common problem scenarios related to single point connectivity failures are asked often, so focus on these.
Be aware of the cost implications of implementing redundant connections via Direct Connect.

Note: Your understanding of use cases where Direct Connect Resiliency is appropriate is crucial.

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Question 1

A multinational enterprise wants to enhance the resilience of their AWS Direct Connect deployment to maintain operations during partial network disruptions. Which of the following is a key consideration for Direct Connect resiliency design?

Correct Answer: Establish a redundant Direct Connect connection at a secondary Direct Connect location.

The best practice to enhance the resilience of an AWS Direct Connect deployment is to establish a redundant Direct Connect connection at a secondary Direct Connect location. This approach ensures that if one connection goes down (due, for instance, to a data center outage or network issues at one location), the other connection can take over, thus maintaining the enterprise's operations. This is in line with AWS recommendations on implementing a resilient architecture. Explanation for other answers: - Configuring Direct Connect to failover to a VPN connection during maintenance windows only is not ideal for resilience because disruptions can occur at any time, not just during scheduled maintenance. Thus, this option does not guarantee continuous operations. - Deploying a single Direct Connect connection with multiple virtual interfaces for different VPCs might help with network organization but does not provide resilience against physical connection failures as there is no redundancy. - Using a dedicated Direct Connect connection for each VPC may improve bandwidth and performance but is costly and does not necessarily improve resilience. If the single Direct Connect location experiences a disruption, all connections would be affected regardless of their dedicated nature.

Question 2

A financial company wants to establish resilient connectivity to multiple VPCs in different AWS regions. What would be the most recommended solution to achieve this with Direct Connect?

Correct Answer: Set up Direct Connect Gateways with multiple virtual interfaces to different regions

Setting up Direct Connect Gateways with multiple virtual interfaces to different regions is the most recommended solution as it provides the ability to connect to multiple VPCs in different regions through a single Direct Connect Gateway. Other options do not provide the same level of resilience and connectivity for multiple VPCs in different regions.

Question 3

A company wants to ensure the highest level of resiliency for AWS Direct Connect connections. However, they are concerned about the cost of additional dedicated Direct Connect connections. What is the most cost-efficient way to ensure Direct Connect resiliency?

Correct Answer: Set up a hosted connection along with a dedicated connection

Setting up a hosted connection along with a dedicated connection is the most cost-efficient way to ensure Direct Connect resiliency, as it provides an additional connection without the need for purchasing another dedicated connection. Other options either do not provide the same level of resiliency or may result in higher costs.

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