ExpertEasy1 markMultiple Choice
AZ-305 · Question 38 · Domain 4.1: Compute Solutions
Your company runs a nightly batch processing job that renders 3D video files.
The job takes about 4 hours to complete. The workload is highly parallel and fault-tolerant; if a rendering task is interrupted, it can simply be restarted without data loss. The IT director wants to reduce the compute costs for this workload by at least 70%.
Which Azure compute purchasing option should you recommend?
Your company runs a nightly batch processing job that renders 3D video files.
The job takes about 4 hours to complete. The workload is highly parallel and fault-tolerant; if a rendering task is interrupted, it can simply be restarted without data loss. The IT director wants to reduce the compute costs for this workload by at least 70%.
Which Azure compute purchasing option should you recommend?
Answer options:
A.
Pay-as-you-go Virtual Machines
B.
1-year Reserved Virtual Machine Instances
C.
Azure Spot Virtual Machines
D.
Azure Dedicated Host
How to approach this question
Match 'fault-tolerant', 'interruptible', and 'massive cost reduction' to Spot VMs.
Full Answer
C.Azure Spot Virtual Machines✓ Correct
Azure Spot Virtual Machines allow you to take advantage of unused Azure capacity at a significant cost savings (up to 90% compared to pay-as-you-go). The trade-off is that Azure can evict (shut down) the VM at any time if it needs the capacity back. Because the 3D rendering workload is fault-tolerant and can be restarted if interrupted, it is the perfect use case for Spot VMs.
Common mistakes
Choosing Reserved Instances. RIs are for workloads that run 24/7. A 4-hour nightly job would waste 20 hours of paid compute every day on an RI.
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