PCDOE Practice Test 24 — 15 Questions

Question 1

Refer to the exhibit. A rollout to dev succeeds, but when promoting to prod, it fails with 'Target 'prod' not found'. What is the issue?

Accepted Answer

The prod target has not been created in the same region.. Option A is correct because the prod target must be created before it can be referenced in a pipeline. Option B is incorrect because redeploying the pipeline won't create the target. Option C is incorrect because the error indicates the target does not exist, not that it's in a different project. Option D is incorrect because approval is not related.

Answer

The prod target does not have a required approval rule.

Answer

The prod target exists but is in a different project.

Answer

The delivery pipeline must be redeployed to include the prod target.

Question 2

A development team is using Cloud Build to build and push Docker images to Artifact Registry. The builds are taking longer than expected, and the team wants to reduce build time and cost. They use a Dockerfile that installs many dependencies. Which approach should they recommend?

Accepted Answer

Use Kaniko cache in Cloud Build with a persistent volume claim to cache base layers.. Option C is correct because using Kaniko with a persistent cache for base layers leverages cache from previous builds, speeding up builds without requiring privileged mode. Option A increases cost by adding more vCPUs without addressing inefficient caching. Option B uses Docker with privileged mode, which is slower and less secure. Option D reduces parallelism, likely increasing build time.

Answer

Increase the machine type to use more vCPUs and memory for the build.

Answer

Switch to Docker build with --privileged flag and use a local Docker daemon.

Answer

Reduce the number of steps in the Cloud Build config to a single step that installs and builds everything.

Question 3

A multinational corporation has multiple development teams working on microservices deployed to GKE clusters. They want to implement a CI/CD pipeline that ensures every container image is scanned for vulnerabilities, passes unit tests, and gets a security approval before deployment to production. They are using Cloud Build for CI and Cloud Deploy for CD. The current pipeline triggers on code push to any branch. The security team requires that all production deployments be reviewed and approved by the security team. Which set of actions best meets these requirements?

Accepted Answer

Configure Cloud Build triggers only for the main branch. Use Cloud Build to build and push images, then rely on Artifact Registry's automatic Container Analysis scanning. In Cloud Deploy, add a manual approval gate for the production phase.. Option B is correct: Using Cloud Build triggers only for main branch reduces unnecessary builds; Container Analysis automatically scans images on push to Artifact Registry; Cloud Deploy can incorporate a manual approval step for the production phase. Option A is incorrect because pre-build scanning doesn't catch build-time introduced vulnerabilities. Option C is incorrect because Cloud Build does not natively support manual approvals; that is a CD responsibility. Option D is incorrect because Cloud Build can run tests before scanning, but the approval should be in Cloud Deploy.

Answer

Run all tests and scans in a single Cloud Build step and use Cloud Build's built-in approval feature to require a reviewer before pushing to Artifact Registry.

Answer

Run vulnerability scans in the Cloud Build step before building the image, and add a security team member to the project as an editor to approve deployments.

Answer

Use Cloud Build to run tests and scans, then have Cloud Build send a notification to a Cloud Pub/Sub topic that triggers a Cloud Function to approve the deployment.

Question 4

A fintech company deploys a critical payment service on GKE using Cloud Deploy with a canary deployment strategy. They want to automatically roll back if the canary release causes an increase in error rates over 1%. They have set up Cloud Monitoring to expose a custom metric 'error_rate' from the service. They want Cloud Deploy to evaluate this metric during the canary phase and roll back if the threshold is exceeded. What is the minimal configuration needed?

Accepted Answer

In the Skaffold configuration, define a 'verify' section with a 'stackdriverMetrics' verification job that queries the 'error_rate' metric and sets a threshold. In Cloud Deploy, ensure the rollout strategy is 'canary' and no manual approval is required.. Option A is correct: Cloud Deploy supports 'canaryDeployment' with phases and requires a verification job that queries Stackdriver metrics. Defining a 'stackdriverMetrics' verification job in the Skaffold configuration achieves this. Option B is incorrect because the rollout strategy 'strategy' is not a top-level field; it's part of the pipeline. Option C is incorrect because Cloud Deploy does not inherently know the metrics; a verification job must be defined. Option D is incorrect because additional phases are not needed and don't enable metric evaluation.

Answer

Install the Cloud Operations agent on the GKE nodes and configure Cloud Deploy to read the 'error_rate' metric from Cloud Monitoring by default.

Answer

Set the Cloud Deploy pipeline's 'strategy' field to 'canary' and set 'autoRollback: true' on the release.

Answer

Create a Cloud Deploy rollout with multiple phases and add a 'stackdriverMetrics' job to the 'postDeploy' phase.

Question 5

A company uses Compute Engine with committed use discounts for 1-year. They need to reduce costs further. What should they do?

Accepted Answer

Rightsize their VMs based on recommender recommendations.. Rightsizing based on recommender recommendations reduces resource usage without changing pricing model, offering immediate cost savings.

Answer

Use sustained use discounts instead.

Answer

Use preemptible VMs for all workloads.

Answer

Increase committed use discount term to 3 years.

Question 6

A team wants to receive a notification when their monthly spending exceeds 80% of the budget. Which GCP feature should they configure?

Accepted Answer

Budget alert with threshold rule at 0.8.. Budget alerts with threshold rules trigger notifications when spending reaches specified percentages, such as 80%.

Answer

Committed use discounts.

Answer

Cloud Storage bucket for cost exports.

Answer

Cloud Monitoring cost insights dashboard.

Question 7

A company uses BigQuery for analytics with many queries scanning terabytes daily. They need to reduce query costs without reducing usage. What is the most effective strategy?

Accepted Answer

Partition and cluster tables.. Partitioning and clustering tables reduce the amount of data scanned per query, directly lowering costs.

Answer

Reserve capacity in specific regions.

Answer

Use flat-rate pricing with slots.

Answer

Use standard SQL instead of legacy SQL.

Question 8

A company uses Cloud Storage with standard storage class for all data. They want to automatically move data that has been accessed more than 30 days ago to a lower-cost storage class, and after 90 days to archive. What should they configure?

Accepted Answer

Lifecycle management rules.. Lifecycle management rules can automatically transition objects to different storage classes based on age or last access time.

Answer

Bucket lock.

Answer

Retention policy.

Answer

Object versioning.

Question 9

A company has multiple projects under an organization. They want to allocate costs to different departments based on project labels. They have applied labels to all resources, but the cost reports show 'Unlabeled' for many resources. What is the most likely cause?

Accepted Answer

Labels were applied after the billing period.. Labels applied after the billing period do not apply to historical data; they only appear in future billing reports.

Answer

Labels are not propagated to billing export.

Answer

The billing export is not configured.

Answer

The project uses a different billing account.

Question 10

A team uses Cloud SQL for MySQL. They have read-heavy traffic and want to reduce costs. Which strategy is most effective?

Accepted Answer

Use read replicas to offload read queries.. Using read replicas offloads read queries from the primary instance, allowing the primary to be downsized or use a lower-tier instance, reducing cost.

Answer

Use committed use discounts.

Answer

Use High Availability with a standby instance.

Answer

Use vertical scaling to increase instance size.

Question 11

A company wants to control costs by limiting the maximum number of Compute Engine instances a project can create. Which TWO methods can achieve this? (Choose two.)

Accepted Answer

Use IAM conditions to restrict instance creation.. Resource quotas limit the number of instances that can be created. IAM conditions can restrict instance creation based on attributes like machine type or region, effectively limiting the number created.

Answer

Enable preemptible VMs.

Answer

Create budget alerts with a threshold at 80% of budget.

Answer

Apply committed use discounts.

Question 12

Refer to the exhibit. What does this recommendation suggest?

Accepted Answer

Upgrade the instance.. The description explicitly states to upgrade the instance from n1-standard-2 to n1-standard-4, indicating a need for more resources.

Answer

Change the instance to preemptible.

Answer

Delete the instance.

Answer

Downgrade the instance.

Question 13

A company has multiple projects in an organization. They want to set a budget of $5000 per month on a specific project and receive notifications when spending reaches 50% and 90%. What should they do?

Accepted Answer

Create a budget at the project level with alert thresholds of 50% and 90%. Option D is correct because budgets can be created at the project level with alert thresholds. Option A is incorrect because an organization-level budget would cover all projects. Option B is overengineering. Option C is possible but not the simplest approach.

Answer

Use the Cloud Billing API to monitor spending and send custom alerts

Answer

Create a budget at the organization level with alert thresholds of 50% and 90%

Answer

Configure a Pub/Sub topic and set up a cloud function to check spending daily

Question 14

A large enterprise manages costs across multiple GCP projects using a shared billing account. They want to apply a 10% discount on all committed use discounts (CUDs) to specific departments based on resource labels. How should they allocate the CUD savings?

Accepted Answer

Enable 'CUD cost attribution' in the billing account settings to automatically distribute savings based on project labels. Option D is correct because enabling CUD cost attribution in billing account settings automatically distributes CUD benefits based on labels. Option A is incorrect because 'Cost Attribution' is for custom cost allocation, not CUDs. Option B is manual and error-prone. Option C is possible but not a built-in feature.

Answer

Use the Cloud Billing report's 'Cost Attribution' feature to assign CUD savings based on labels

Answer

Use the Cloud Billing cost table in BigQuery with the CUD cost data and allocate using custom queries

Answer

Manually calculate CUD savings and distribute via journal entries

Question 15

A company wants to set budgets and alerts for a GCP project. Which two steps are required to enable budget notifications via email? (Choose two.)

Accepted Answer

Create a budget alert threshold in the Cloud Console. Options A and C are required. You must create a budget with alert thresholds and add email recipients in the budget configuration. Option B is not required for email. Options D and E are for programmatic notifications.

Answer

Enable the Cloud Billing API for the project

Answer

Create a Pub/Sub topic and subscribe to it

Answer

Set up a Cloud Function to send emails

PCDOE Practice Test 24 — 15 Questions

Exhibit

PCDOE Practice Test 24 — 15 Questions

Exhibit