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GCP Professional Cloud Architect Practice Question

Your analytics platform requires a single Compute Engine VM with exactly 16 vCPUs and 160 GB of RAM. The team initially chose an n2-highmem-32 instance (32 vCPUs, 256 GB) but wants to reduce hourly spend while staying on the N2 machine family. Which statement about using a custom machine type best satisfies both the workload's technical needs and cost goals?

  • Custom N2 machines cannot exceed 8 GB of memory per vCPU, so the workload would need at least 20 vCPUs, eliminating any cost advantage.

  • Create a custom N2 VM with 16 vCPUs and 160 GB RAM, enable extended memory so only the 32 GB above 128 GB is billed at a 100 percent premium; the VM still qualifies for sustained- and committed-use discounts and costs less than n2-highmem-32.

  • Custom machine types are always billed at the rate of the next-largest predefined shape in the same family, so a 16 vCPU/160 GB configuration would cost the same as an n2-highmem-32 instance.

  • Custom machine types are only available for the original N1 family and do not receive sustained-use discounts, so using them on N2 would increase total cost.

GCP Professional Cloud Architect
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