PCD Question 67

Community Discussion

Written by other learners. Comments can disagree with the marked answer — check the official documentation when in doubt.

• Chose BD1

  B. Decrease the cool-down period for instances added to the group: The cool-down period is the time the autoscaler waits after a new instance is healthy before it collects usage metrics from the instance. A shorter cool-down period allows the autoscaler to react more quickly to changes in load, potentially starting to scale up sooner when there is a sudden increase in traffic. D. Decrease the target CPU usage for the instance group autoscaler: Lowering the target CPU utilization means that the autoscaler will start adding instances sooner as the CPU usage approaches the lower target. This can help to alleviate the issue where response latency increases sharply because new instances are added before the CPU usage hits a higher threshold.

• Chose BD1

  B and D are the best option here.

• 4

  Options B and D are correct. To provide a more consistent latency experience for your end users, you should make the following configuration changes: Option B: Decrease the cool-down period for instances added to the group. The cool-down period is the time that must pass before the instance group autoscaler can add more instances after it has already added instances to the group. Decreasing the cool-down period can allow the instance group to scale more quickly in response to changes in CPU usage, which may help to reduce latency. Option D: Decrease the target CPU usage for the instance group autoscaler. The target CPU usage is the average CPU usage that the instance group autoscaler aims to maintain for the group. Decreasing the target CPU usage may allow the instance group to scale down more quickly in response to changes in CPU usage, which may also help to reduce latency.