AWS Certified Solutions Architect Associate SAA-C03 Practice Question
Your web application is currently deployed in a single datacenter location within a cloud provider's infrastructure. To enhance its ability to handle the loss of an entire datacenter without disruption, where should the application be extended?
Distribute the application workload across several networking segments within the same datacenter location
Redistribute the application to rely on multiple cloud providers' infrastructures
Extend the application to multiple geographically distinct datacenter locations within the cloud provider's infrastructure
Implement a distributed denial-of-service (DDoS) mitigation service provided by the cloud provider
The correct strategy to enhance fault tolerance is to extend the application across multiple geographically distinct datacenter locations provided by the cloud service, which are commonly known as Availability Zones. This ensures that even if one datacenter goes down, the others can continue to serve the application without interruption. Using a service designed to prevent DDoS attacks, like AWS Shield, does not address the issue of surviving datacenter downtime. Implementing across multiple regions is not necessary to address the single datacenter failure and can introduce unnecessary complexity and cost. Deploying within multiple networking segments such as VPCs in the same datacenter location does not provide protection against the failure of that datacenter.
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What are Availability Zones?
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Why is it important to deploy applications across multiple locations?
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What are the risks of relying on a single datacenter?