ACE sample questions

Question 1

You significantly changed a complex Deployment Manager template and want to confirm that the dependencies of all defined resources are properly met before committing it to the project. You want the most rapid feedback on your changes. What should you do?

Accepted Answer

Execute the Deployment Manager template using the -preview option in the same project, and observe the state of interdependent resources.

Answer

Use granular logging statements within a Deployment Manager template authored in Python.

Answer

Monitor activity of the Deployment Manager execution on the Stackdriver Logging page of the GCP Console.

Answer

Execute the Deployment Manager template against a separate project with the same configuration, and monitor for failures.

Question 2

You need to set up a policy so that videos stored in a specific Cloud Storage Regional bucket are moved to Coldline after 90 days, and then deleted after one year from their creation. How should you set up the policy?

Accepted Answer

Use Cloud Storage Object Lifecycle Management using Age conditions with SetStorageClass and Delete actions. Set the SetStorageClass action to 90 days and the Delete action to 275 days (365 - 90)

Answer

Use Cloud Storage Object Lifecycle Management using Age conditions with SetStorageClass and Delete actions. Set the SetStorageClass action to 90 days and the Delete action to 365 days.

Answer

Use gsutil rewrite and set the Delete action to 275 days (365-90).

Answer

Use gsutil rewrite and set the Delete action to 365 days.

Question 3

You need to grant access for three users so that they can view and edit table data on a Cloud Spanner instance. What should you do?

Accepted Answer

Run gcloud iam roles describe roles/spanner.databaseUser. Add the users to the role.

Answer

Run gcloud iam roles describe roles/spanner.databaseUser. Add the users to a new group. Add theg roup to the role.

Answer

Run gcloud iam roles describe roles/spanner.viewer -project my-project. Add the users to the role.

Answer

Run gcloud iam roles describe roles/spanner.viewer -project my-project. Add the users to a new group. Add the group to the role.

Question 4

Your company uses a large number of Google Cloud services centralized in a single project. All teams have specific projects for testing and development. The DevOps team needs access to all of the production services in order to perform their job. You want to prevent Google Cloud product changes from broadening their permissions in the future. You want to follow Google-recommended practices. What should you do?

Accepted Answer

Grant all members of the DevOps team the role of Project Editor on the production project.

Answer

Grant all members of the DevOps team the role of Project Editor on the organization level.

Answer

Create a custom role that combines the required permissions. Grant the DevOps team the custom role on the production project.

Answer

Create a custom role that combines the required permissions. Grant the DevOps team the custom role on the organization level.

Question 5

Your finance team wants to view the billing report for your projects. You want to make sure that the finance team does not get additional permissions to the project. What should you do?

Accepted Answer

Add the group for the finance team to roles/billing viewer role.

Answer

Add the group for the finance team to roles/bi I ling user role.

Answer

Add the group for the finance team to roles/bi 11 ing admin role.

Answer

Add the group for the finance team to roles/billing project/Manager role.

Question 6

You need to set a budget alert for use of Compute Engineer services on one of the three Google Cloud Platform projects that you manage. All three projects are linked to a single billing account.
What should you do?

Accepted Answer

Verify that you are the project billing administrator. Select the associated billing account and create a budget and a custom alert.

Answer

Verify that you are the project billing administrator. Select the associated billing account and create a budget and alert for the appropriate project.

Answer

Verify that you are the project administrator. Select the associated billing account and create a budget for the appropriate project.

Answer

Verify that you are project administrator. Select the associated billing account and create a budget and a custom alert.

Question 7

You are operating a Google Kubernetes Engine (GKE) cluster for your company where different teams can run non-production workloads. Your Machine Learning (ML) team needs access to Nvidia Tesla P100 GPUs to train their models. You want to minimize effort and cost. What should you do?

Accepted Answer

Recreate all the nodes of the GKE cluster to enable GPUs on all of them.

Answer

Ask your ML team to add the “accelerator: gpu” annotation to their pod specification.

Answer

Create your own Kubernetes cluster on top of Compute Engine with nodes that have GPUs. Dedicate this cluster to your ML team.

Answer

Add a new, GPU-enabled, node pool to the GKE cluster. Ask your ML team to add the cloud.google.com/gke -accelerator: nvidia-tesla-p100 nodeSelector to their pod specification.

Question 8

You’ve deployed a microservice called myappl to a Google Kubernetes Engine cluster using the YAML file specified below:

You need to refactor this configuration so that the database password is not stored in plain text. You want to follow Google-recommended practices. What should you do?

Accepted Answer

Store the database password inside a ConfigMap object. Modify the YAML file to populate the DB_PASSWORD environment variable from the ConfigMap.

Answer

store the database password inside the Docker image of the container, not in the YAML file.

Answer

store the database password inside a Secret object. Modify the YAML file to populate the DB_PASSWORD environment variable from the Secret.

Answer

store the database password in a file inside a Kubernetes persistent volume, and use a persistent volume claim to mount the volume to the container.

Question 9

You need to run an important query in BigQuery but expect it to return a lot of records. You want to find out how much it will cost to run the query. You are using on-demand pricing. What should you do?

Accepted Answer

Use the command line to run a dry run query to estimate the number of bytes read. Then convert that bytes estimate to dollars using the Pricing Calculator.

Answer

Arrange to switch to Flat-Rate pricing for this query, then move back to on-demand.

Answer

Use the command line to run a dry run query to estimate the number of bytes returned. Then convert that bytes estimate to dollars using the Pricing Calculator.

Answer

Run a select count (*) to get an idea of how many records your query will look through. Then convert that number of rows to dollars using the Pricing Calculator.

Question 10

You are running an application on multiple virtual machines within a managed instance group and have autoscaling enabled. The autoscaling policy is configured so that additional instances are added to the group if the CPU utilization of instances goes above 80%. VMs are added until the instance group reaches its maximum limit of five VMs or until CPU utilization of instances lowers to 80%. The initial delay for HTTP health checks against the instances is set to 30 seconds. The virtual machine instances take around three minutes to become available for users. You observe that when the instance group autoscales, it adds more instances then necessary to support the levels of end-user traffic. You want to properly maintain instance group sizes when autoscaling. What should you do?

Accepted Answer

Increase the initial delay of the HTTP health check to 200 seconds.

Answer

Set the maximum number of instances to 1.

Answer

Decrease the maximum number of instances to 3.

Answer

Use a TCP health check instead of an HTTP health check.

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