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GCP Associate Cloud Engineer Practice Question

You are migrating a legacy web service from a single VM to a managed instance group (MIG). The service must always have capacity for at least two concurrent instances, but to control costs it must never exceed ten instances. The operations team wants the group to expand quickly when its average CPU utilization rises above 70 percent for one minute and shrink again when the load falls below that level. Which autoscaling policy configuration for the MIG best satisfies these requirements?

  • Configure minNumReplicas = 0, maxNumReplicas = 10, and a CPU utilization target of 0.4 with a 60-second cool-down period.

  • Configure minNumReplicas = 2, maxNumReplicas = 10, a CPU utilization target of 0.55, and separate cool-down periods of 60 seconds for scale-out and 120 seconds for scale-in.

  • Configure minNumReplicas = 2, maxNumReplicas = 10, and a CPU utilization target of 0.7 with a 60-second cool-down period.

  • Configure minNumReplicas = 2, maxNumReplicas = 10, and add a schedule-based autoscaling policy that starts new VMs when CPU exceeds 70 percent.

GCP Associate Cloud Engineer
Planning and implementing a cloud solution
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