Google Google Certifications PROFESSIONAL-CLOUD-DEVELOPER Questions & Answers

• Question 231:

  You are developing an application that reads credit card data from a Pub/Sub subscription. You have written code and completed unit testing. You need to test the Pub/Sub integration before deploying to Google Cloud. What should you do?

  A. Create a service to publish messages, and deploy the Pub/Sub emulator. Generate random content in the publishing service, and publish to the emulator.

  B. Create a service to publish messages to your application. Collect the messages from Pub/Sub in production, and replay them through the publishing service.

  C. Create a service to publish messages, and deploy the Pub/Sub emulator. Collect the messages from Pub/Sub in production, and publish them to the emulator.

  D. Create a service to publish messages, and deploy the Pub/Sub emulator. Publish a standard set of testing messages from the publishing service to the emulator.

  Correct Answer: D

• Question 232:

  Before promoting your new application code to production, you want to conduct testing across a variety of different users. Although this plan is risky, you want to test the new version of the application with production users and you want to control which users are forwarded to the new version of the application based on their operating system. If bugs are discovered in the new version, you want to roll back the newly deployed version of the application as quickly as possible.

  What should you do?

  A. Deploy your application on Cloud Run. Use traffic splitting to direct a subset of user traffic to the new version based on the revision tag.

  B. Deploy your application on Google Kubernetes Engine with Anthos Service Mesh. Use traffic splitting to direct a subset of user traffic to the new version based on the user-agent header.

  C. Deploy your application on App Engine. Use traffic splitting to direct a subset of user traffic to the new version based on the IP address.

  D. Deploy your application on Compute Engine. Use Traffic Director to direct a subset of user traffic to the new version based on predefined weights.

  Correct Answer: B

• Question 233:

  Your application is deployed in a Google Kubernetes Engine (GKE) cluster. You want to expose this application publicly behind a Cloud Load Balancing HTTP(S) load balancer. What should you do?

  A. Configure a GKE Ingress resource.

  B. Configure a GKE Service resource.

  C. Configure a GKE Ingress resource with type: LoadBalancer.

  D. Configure a GKE Service resource with type: LoadBalancer.

  Correct Answer: A

  Reference: https://cloud.google.com/kubernetes-engine/docs/concepts/ingress

• Question 234:

  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. Stackdriver uptime checks

  C. Cloud Load Balancing - heath checks

  D. Managed instance group - heath checks

  Correct Answer: B

  Reference: https://medium.com/google-cloud/stackdriver-monitoring-automation-part-3- uptime-checks476b8507f59c

• Question 235:

  Your team is developing a Cloud Function triggered by Cloud Storage Events. You want to accelerate testing and development of your Cloud Function while following Google- recommended best practices. What should you do?

  A. Install the Functions Frameworks library, and configure the Cloud Function on localhost. Make a copy of the function, and make edits to the new version Test the new version using cur1.

  B. Make a copy of the Cloud Function, and rewrite the code to be HTTP-triggered Edit and test the new version by triggering the HTTP endpoint. Send mock requests to the new function to evaluate the functionality.

  C. Make a copy of the Cloud Function in the Google Cloud Console Use the Cloud console's in-line editor to make source code changes to the new function Modify your web application to call the new function and test the new version in production.

  D. Create a new Cloud Function that is triggered when Cloud Audit Logs detects the cloudfunctions. functions. sourceCodeSet operation in the original Cloud Function Send mock requests to the new function to evaluate the functionality.

  Correct Answer: A

• Question 236:

  You are using Cloud Run to host a web application. You need to securely obtain the application project ID and region where the application is running and display this information to users. You want to use the most performant approach. What should you do?

  A. Use HTTP requests to query the available metadata server at the http://metadata.google.internal/ endpoint with the Metadata-Flavor: Google header.

  B. In the Google Cloud console, navigate to the Project Dashboard and gather configuration details. Navigate to the Cloud Run "Variables and Secrets" tab, and add the desired environment variables in Key:Value format.

  C. In the Google Cloud console, navigate to the Project Dashboard and gather configuration details. Write the application configuration information to Cloud Run's in- memory container filesystem.

  D. Make an API call to the Cloud Asset Inventory API from the application and format the request to include instance metadata.

  Correct Answer: B

• Question 237:

  You need to deploy an internet-facing microservices application to Google Kubernetes Engine (GKE). You want to validate new features using the A/B testing method. You have the following requirements for deploying new container image releases

  ?There is no downtime when new container images are deployed.

  ?New production releases are tested and verified using a subset of production users.

  What should you do?

  A. 1 Configure your Cl/CD pipeline to update the Deployment manifest file by replacing the container version with the latest version. 2 Recreate the Pods in your cluster by applying the Deployment manifest file. 3 Validate the application's performance by comparing its functionality with the previous release version and roll back if an issue arises.

  B. 1 install the Anthos Service Mesh on your GKE cluster. 2 Create two Deployments on the GKE cluster and label them with different version names. 3 Create a VirtualService with a routing rule to send a small percentage of traffic to the Deployment that references the new version of the application.

  C. 1 Create a second namespace on GKE for the new release version. 2 Create a Deployment configuration for the second namespace with the desired number of Pods. 3 Deploy new container versions in the second namespace. 4 Update the ingress configuration to route traffic to the namespace with the new container versions.

  D. 1. Implement a rolling update pattern by replacing the Pods gradually with the new release versify. 2 Validate the application's performance for the new subset of users during the rollout and roll back if an issue arises.

  Correct Answer: C

• Question 238:

  You are a developer at a financial institution You use Cloud Shell to interact with Google Cloud services. User data is currently stored on an ephemeral disk however a recently passed regulation mandates that you can no longer store sensitive information on an ephemeral disk. You need to implement a new storage solution for your user data You want to minimize code changes Where should you store your user data'?

  A. Store user data on a Cloud Shell home disk and log in at least every 120 days to prevent its deletion

  B. Store user data on a persistent disk in a Compute Engine instance

  C. Store user data m BigQuery tables

  D. Store user data in a Cloud Storage bucket

  Correct Answer: B

• Question 239:

  You are designing an application that consists of several microservices. Each microservice has its own RESTful API and will be deployed as a separate Kubernetes Service. You want to ensure that the consumers of these APIs aren't impacted when there is a change to your API, and also ensure that third-party systems aren't interrupted when new versions of the API are released. How should you configure the connection to the application following Google-recommended best practices?

  A. Use an Ingress that uses the API's URL to route requests to the appropriate backend.

  B. Leverage a Service Discovery system, and connect to the backend specified by the request.

  C. Use multiple clusters, and use DNS entries to route requests to separate versioned backends.

  D. Combine multiple versions in the same service, and then specify the API version in the POST request.

  Correct Answer: D

• Question 240:

  You are designing a schema for a table that will be moved from MySQL to Cloud Bigtable. The MySQL table is as follows:

  

  How should you design a row key for Cloud Bigtable for this table?

  A. Set Account_id as a key.

  B. Set Account_id_Event_timestamp as a key.

  C. Set Event_timestamp_Account_id as a key.

  D. Set Event_timestamp as a key.

  Correct Answer: C