ExpertMedium1 markMultiple Choice
AZ-305 · Question 40 · Domain 4.1: Compute Solutions
You are designing a compute architecture using Azure Virtual Machine Scale Sets (VMSS).
The workload requires high availability across Availability Zones. You also need the ability to mix different VM sizes within the same scale set, and you want to manage the lifecycle of individual VMs within the scale set manually when necessary.
Which orchestration mode should you configure for the VMSS?
You are designing a compute architecture using Azure Virtual Machine Scale Sets (VMSS).
The workload requires high availability across Availability Zones. You also need the ability to mix different VM sizes within the same scale set, and you want to manage the lifecycle of individual VMs within the scale set manually when necessary.
Which orchestration mode should you configure for the VMSS?
Answer options:
A.
Uniform orchestration
B.
Flexible orchestration
C.
Availability Sets
D.
Azure Batch
How to approach this question
Identify the VMSS mode that allows heterogeneous VM sizes and individual VM management.
Full Answer
B.Flexible orchestration✓ Correct
Flexible orchestration
Virtual Machine Scale Sets support two orchestration modes. Uniform orchestration is the legacy mode where all VMs must be identical and are managed as a single unit. Flexible orchestration is the modern mode. It allows you to mix different VM sizes (e.g., Spot VMs and standard VMs), spread them across Availability Zones, and manage the lifecycle of individual VMs (like attaching a specific data disk to just one VM).
Common mistakes
Choosing Uniform orchestration. Uniform is the default in older documentation, but Flexible is the architectural standard for modern, complex deployments.
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