NorthWind runs Application Gateway v2 (Standard_v2) and must ensure zone-level fault tolerance. They also want autoscaling with a minimum of 1 instance for cost savings and a maximum of 10. What is the correct configuration to enable zone redundancy and autoscale while meeting zone fault-tolerance requirements?
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Correct answer: Set autoscale Min capacity = 2, Max capacity = 10, and enable Zone Redundancy on the Application Gateway v2 because zone redundancy requires at least two instances..
Why this is the answer
The correct configuration is to set autoscale Min capacity = 2, Max capacity = 10, and enable Zone Redundancy on the Application Gateway v2. Azure Application Gateway v2 requires a minimum of two instances to enable zone redundancy. This ensures that if one availability zone experiences an outage, the other instance in a different zone can continue processing traffic, providing zone-level fault tolerance. Setting the minimum to 1 instance will not allow zone redundancy to be enabled. Manual scaling is not required for zone redundancy, and deploying a second Application Gateway with Traffic Manager is a more complex and costly solution than the built-in zone redundancy feature of Application Gateway v2.
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