ExpertMedium1 markMultiple Choice
GCP PCA · Question 33 · Cost Optimization
You are running a batch processing job on Compute Engine that takes 4 hours to complete. The job is fault-tolerant; if a VM shuts down, the job can resume from where it left off. You want to minimize compute costs. Which instance type should you use?
You are running a batch processing job on Compute Engine that takes 4 hours to complete. The job is fault-tolerant; if a VM shuts down, the job can resume from where it left off. You want to minimize compute costs. Which instance type should you use?
Answer options:
A.
Standard VMs with a 1-year Committed Use Discount.
B.
Spot VMs
C.
Sole-tenant nodes.
D.
E2-micro shared-core instances.
How to approach this question
Match the workload characteristic ('fault-tolerant') with the cheapest compute option.
Full Answer
B.Spot VMs✓ Correct
Spot VMs (formerly Preemptible VMs) are excess Compute Engine capacity offered at massive discounts. Google can reclaim them at any time. Because the batch job is fault-tolerant and can resume upon interruption, Spot VMs provide the lowest possible cost.
Common mistakes
Choosing CUDs (A) for a workload that doesn't run 24/7.
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