Google Certified Professional - Cloud Developer - Professional-Cloud-Developer Exam Practice Test

Question 1

Your company has deployed a new API to App Engine Standard environment. During testing, the API is not behaving as expected. You want to monitor the application over time to diagnose the problem within the application code without redeploying the application.
Which tool should you use?

A. Stackdriver Trace

B. Stackdriver Debug Logpoints

C. Stackdriver Monitoring

D. Stackdriver Debug Snapshots

Correct Answer: B

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Question 2

You made a typo in a low-level Linux configuration file that prevents your Compute Engine instance from booting to a normal run level. You just created the Compute Engine instance today and have done no other maintenance on it, other than tweaking files. How should you correct this error?

A. Configure and log in to the Compute Engine instance using a remote desktop client, and change the file

B. Configure and log in to the Compute Engine instance through SSH, and change the file

C. Configure and log in to the Compute Engine instance through the serial port, and change the file

D. Download the file using scp, change the file, and then upload the modified version

Correct Answer: C

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Question 3

Your team has created an application that is hosted on a Google Kubemetes Engine (GKE) cluster. You need to connect the application to a legacy REST service that is deployed in two GKE clusters in two different regions. You want to connect your application to the legacy service in a way that is resilient and requires the fewest number of steps. You also want to be able to run probe-based health checks on the legacy service on a separate port. How should you set up the connection? (Choose two.)

A. Use Traffic Director with a sidecar proxy to connect the application to the service.

B. Configure the legacy service's firewall to allow health checks originating from the application.

C. Configure the legacy service's firewall to allow health checks originating from the sidecar proxy.

D. Set up a proxyless Traffic Director configuration for the application.

E. Configure the legacy service's firewall to allow health checks originating from the Traffic Director control plane.

Correct Answer: A,C

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Question 4

You recently migrated a monolithic application to Google Cloud by breaking it down into microservices. One of the microservices is deployed using Cloud Functions. As you modernize the application, you make a change to the API of the service that is backward-incompatible. You need to support both existing callers who use the original API and new callers who use the new API. What should you do?

A. Leave the original Cloud Function as-is and deploy a second Cloud Function with the new API.
Use Cloud Endpoints to provide an API gateway that exposes a versioned API.

B. Leave the original Cloud Function as-is and deploy a second Cloud Function that includes only the changed API. Calls are automatically routed to the correct function.

C. Leave the original Cloud Function as-is and deploy a second Cloud Function with the new API.
Use a load balancer to distribute calls between the versions.

D. Re-deploy the Cloud Function after making code changes to support the new API. Requests for both versions of the API are fulfilled based on a version identifier included in the call.

Correct Answer: A

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Question 5

Your team is responsible for developing multiple microservices. These microservices are deployed in Cloud Run and connected to a Cloud SQL instance. You typically conduct tests in a local environment prior to deploying new features. However, the external IP was recently removed from your Cloud SQL instance, and you are unable to perform the tests. You need to connect to the database to conduct tests with the most updated data. You want to follow Google- recommended practices. What should you do?

A. Export the data from the database to a Cloud Storage bucket. Create a database on your computer and import the data.

B. Create a Cloud VPN tunnel from your computer to your Google Cloud project, and connect to the Cloud SQL instance.

C. Add your IP as an authorized network on the Cloud SQL instance.

D. Create a VM in the same VPC as the Cloud SQL instance. Connect to the VM by using Identity- Aware Proxy for TCP forwarding. Install and configure the Cloud SQL Auth Proxy.

Correct Answer: D

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Question 6

You have an application running in production on Cloud Run. Your team needs to change one of the application's services to return a new field. You want to test the new revision on 10% of your clients using the least amount of effort. What should you do to keep your service backward compatible?

A. Replace the current service with the new revision. Deploy the new revision. Create a load balancer to split the traffic between the previous service and the new revision.

B. Replace the current service with the new revision. Deploy the new revision with no traffic allocated. After the deployment, split the traffic between the previous service and the new revision.

C. Update the current service with the new changes. Deploy the new revision. After the deployment, split the traffic between the current service and the new revision.

D. Update the current service with the new changes. Deploy the new revision with no traffic allocated. Split the traffic between the current service and the new revision.

Correct Answer: D

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Question 7

You migrated some of your applications to Google Cloud. You are using a legacy monitoring platform deployed on-premises for both on-premises and cloud- deployed applications. You discover that your notification system is responding slowly to time-critical problems in the cloud applications. What should you do?

A. Install the Cloud Monitoring agent on your Compute Engine instances.

B. Replace your monitoring platform with Cloud Monitoring.

C. Use Cloud Logging and Cloud Monitoring to capture logs, monitor, and send alerts. Send them to your existing platform.

D. Migrate some traffic back to your old platform. Perform A/B testing on the two platforms concurrently.

Correct Answer: C

Question 8

You are designing an application that uses a microservices architecture. You are planning to deploy the application in the cloud and on-premises. You want to make sure the application can scale up on demand and also use managed services as much as possible. What should you do?

A. Create a GKE cluster in each environment with Anthos, and use Cloud Run for Anthos to deploy your application to each cluster.

B. Deploy open source Istio in a multi-cluster deployment on multiple Google Kubernetes Engine (GKE) clusters managed by Anthos.

C. Create a GKE cluster in the cloud and install open-source Kubernetes on-premises. Use an external load balancer service to distribute traffic across the two environments.

D. Install a GKE cluster in each environment with Anthos, and use Cloud Build to create a Deployment for your application in each cluster.

Correct Answer: A

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Question 9

You recently deployed your application in Google Kubernetes Engine, and now need to release a new version of your application. You need the ability to instantly roll back to the previous version in case there are issues with the new version. Which deployment model should you use?

A. Perform a rolling deployment, and test your new application after the deployment is complete.

B. Perform a canary deployment, and test your new application periodically after the new version is deployed.

C. Perform a blue/green deployment, and test your new application after the deployment is.
complete.

D. Perform A/B testing, and test your application periodically after the new tests are implemented.

Correct Answer: C

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Question 10

You have an application in production. It is deployed on Compute Engine virtual machine instances controlled by a managed instance group. Traffic is routed to the instances via a HTTP(s) load balancer. Your users are unable to access your application. You want to implement a monitoring technique to alert you when the application is unavailable.
Which technique should you choose?

A. Smoke tests

B. Cloud Load Balancing - heath checks

C. Stackdriver uptime checks

D. Managed instance group - heath checks

Correct Answer: C

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Google Certified Professional - Cloud Developer - Professional-Cloud-Developer Exam Practice Test

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