Microsoft Azure Fundamentals AZ-900 Practice Question
You are deploying a mission-critical application in Azure and need to ensure it remains available if a datacenter within an Azure region fails. Which Azure feature should you use to achieve this level of resiliency?
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Deploy your application across multiple resource groups in the same region.
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Deploy your application across multiple availability zones within the same region.
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Deploy your application across multiple regions in a region pair.
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Use an Azure Virtual Network to distribute the application traffic.
Deploying your application across multiple availability zones within the same region ensures high availability and resiliency. Availability zones are physically separate locations within a region, each with independent power, cooling, and networking. If one datacenter (availability zone) fails, the application remains available from the other zones.
Deploying across multiple resource groups in the same region does not provide physical separation or protection against datacenter failures, as resource groups are logical containers for organizing resources.
Deploying across multiple regions in a region pair provides geographic redundancy, but the question focuses on resiliency within the same region.
Using an Azure Virtual Network to distribute the application traffic helps in network traffic management but doesn't inherently provide fault tolerance against datacenter failures unless combined with deployment across multiple availability zones.
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Microsoft Azure Fundamentals AZ-900
Azure Architecture and Services
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