Microsoft Azure Architect Design (2020, legacy) — Question 56

You plan to move a web application named App! from an on-premises data center to Azure.
App1 depends on a custom COM component that is installed on the host server.
You need to recommend a solution to host App1 in Azure. The solution must meet the following requirements:
✑ App1 must be available to users if an Azure data center becomes unavailable.
✑ Costs must be minimized.
What should you include in the recommendation?

Answer options

• A. In two Azure regions, deploy a load balancer and a virtual machine scale set.
• B. In two Azure regions, deploy a Traffic Manager profile and a web app.
• C. In two Azure regions, deploy a load balancer and a web app.
• D. Deploy a load balancer and a virtual machine scale set across two availability zones.

Correct answer: D

Explanation

The correct answer is D because deploying a load balancer and a virtual machine scale set across two availability zones ensures high availability and fault tolerance, allowing App1 to remain accessible even if one zone fails. Options A and C do not utilize availability zones, which are crucial for maintaining availability during data center outages. Option B is not suitable as it suggests using a web app, which may not support the custom COM component required by App1.