Professional-Cloud-Developer by Google Actual Free Exam Questions And Answers

Question 1

You have a mixture of packaged and internally developed applications hosted on a Compute Engine instance that is running Linux. These applications write log records as text in local files.
You want the logs to be written to Cloud Logging. What should you do?

A. Install a Google version of fluentd on the Compute Engine instance.

B. Install a Google version of collectd on the Compute Engine instance.

C. Pipe the content of the files to the Linux Syslog daemon.

D. Using cron, schedule a job to copy the log files to Cloud Storage once a day.

Discussion 0

Correct Answer: A Vote an answer

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Question 2

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

B. In the Google Cloud console, navigate to the Project Dashboard and gather configuration details.
Navigate to the Cloud Run "Variables & 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. Use HTTP requests to query the available metadata server at the http://metadata.google.internal/ endpoint with the Metadata-Flavor: Google header.

Discussion 0

Correct Answer: D Vote an answer

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Question 3

You have an application deployed in production. When a new version is deployed, some issues don't arise until the application receives traffic from users in production. You want to reduce both the impact and the number of users affected.
Which deployment strategy should you use?

A. Rolling deployment

B. Blue/green deployment

C. Recreate deployment

D. Canary deployment

Discussion 0

Correct Answer: D Vote an answer

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Question 4

You are monitoring a web application that is written in Go and deployed in Google Kubernetes Engine. You notice an increase in CPU and memory utilization. You need to determine which source code is consuming the most CPU and memory resources. What should you do?

A. Import the Cloud Profiler package into your application, and initialize the Profiler agent. Review the generated flame graph in the Google Cloud console to identify time-intensive functions.

B. Create a Cloud Logging query that gathers the web application's logs. Write a Python script that calculates the difference between the timestamps from the beginning and the end of the application's longest functions to identity time-intensive functions.

C. Download, install, and start the Snapshot Debugger agent in your VM. Take debug snapshots of the functions that take the longest time. Review the call stack frame, and identify the local variables at that level in the stack.

D. Import OpenTelemetry and Trace export packages into your application, and create the trace provider.
Review the latency data for your application on the Trace overview page, and identify where bottlenecks are occurring.

Discussion 0

Correct Answer: A Vote an answer

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Question 5

You are planning to migrate a MySQL database to the managed Cloud SQL database for Google Cloud. You have Compute Engine virtual machine instances that will connect with this Cloud SQL instance. You do not want to whitelist IPs for the Compute Engine instances to be able to access Cloud SQL.
What should you do?

A. Whitelist a project to access Cloud SQL, and add Compute Engine instances in the whitelisted project.

B. Create a CloudSQL instance on one project. Create Compute engine instances in a different project.Create a VPN between these two projects to allow internal access to CloudSQL.

C. Create a role in Cloud SQL that allows access to the database from external instances, and assign the Compute Engine instances to that role.

D. Enable private IP for the Cloud SQL instance.

Discussion 0

Correct Answer: D Vote an answer

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Question 6

Case Study 1 - HipLocal
Company Overview
HipLocal is a community application designed to facilitate communication between people in close proximity. It is used for event planning and organizing sporting events, and for businesses to connect with their local communities. HipLocal launched recently in a few neighborhoods in Dallas and is rapidly growing into a global phenomenon. Its unique style of hyper-local community communication and business outreach is in demand around the world.
Executive Statement
We are the number one local community app; it's time to take our local community services global. Our venture capital investors want to see rapid growth and the same great experience for new local and virtual communities that come online, whether their members are 10 or 10000 miles away from each other.
Solution Concept
HipLocal wants to expand their existing service, with updated functionality, in new regions to better serve their global customers. They want to hire and train a new team to support these regions in their time zones. They will need to ensure that the application scales smoothly and provides clear uptime data.
Existing Technical Environment
HipLocal's environment is a mix of on-premises hardware and infrastructure running in Google Cloud Platform. The HipLocal team understands their application well, but has limited experience in global scale applications. Their existing technical environment is as follows:
* Existing APIs run on Compute Engine virtual machine instances hosted in GCP.
* State is stored in a single instance MySQL database in GCP.
* Data is exported to an on-premises Teradata/Vertica data warehouse.
* Data analytics is performed in an on-premises Hadoop environment.
* The application has no logging.
* There are basic indicators of uptime; alerts are frequently fired when the APIs are unresponsive.
Business Requirements
HipLocal's investors want to expand their footprint and support the increase in demand they are seeing. Their requirements are:
* Expand availability of the application to new regions.
* Increase the number of concurrent users that can be supported.
* Ensure a consistent experience for users when they travel to different regions.
* Obtain user activity metrics to better understand how to monetize their product.
* Ensure compliance with regulations in the new regions (for example, GDPR).
* Reduce infrastructure management time and cost.
* Adopt the Google-recommended practices for cloud computing.
Technical Requirements
* The application and backend must provide usage metrics and monitoring.
* APIs require strong authentication and authorization.
* Logging must be increased, and data should be stored in a cloud analytics platform.
* Move to serverless architecture to facilitate elastic scaling.
* Provide authorized access to internal apps in a secure manner.
Which service should HipLocal use for their public APIs?

A. Shielded Virtual Machines

B. Cloud Functions

C. Cloud Endpoints

D. Cloud Armor

Discussion 0

Correct Answer: C Vote an answer

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Question 7

You plan to deploy a new application revision with a Deployment resource to Google Kubernetes Engine (GKE) in production. The container might not work correctly. You want to minimize risk in case there are issues after deploying the revision. You want to follow Google-recommended best practices. What should you do?

A. Convert the Deployment to a StatefulSet, and perform a rolling update with a HorizontalPodAutoscaler scale-down policy value of 0.

B. Perform a rolling update with a PodDisruptionBudget of 80%.

C. Convert the Deployment to a StatefulSet, and perform a rolling update with a PodDisruptionBudget of 80%.

D. Perform a rolling update with a HorizontalPodAutoscaler scale-down policy value of 0.

Discussion 0

Correct Answer: B Vote an answer

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Question 8

You work for an ecommerce company. You are designing a new Orders API that will be exposed through Apigee. In your Apigee organization, you created two new environments named orders- test and orders-prod. You plan to use unique URLs named test.Ink-42.com/api/v1/orders and Ink-
42.com/api/v1/orders for each environment. You need to ensure that each environment only uses the assigned URL. What should you do?

A. 1. Attach orders-test and orders-prod to the orders environment group.
2. Add each hostname to the appropriate environment.

B. 1. Attach orders-test and orders-prod to the orders environment group.
2. Add each hostname to the orders environment group.

C. 1. Attach orders-test to the test environment group, and attach orders-prod to the production environment group.
2. Add each hostname to the appropriate environment group.

D. 1. Attach orders-test to the test environment group, and attach orders-prod to the production environment group.
2. Add each hostname to the appropriate environment.

Discussion 0

Correct Answer: C Vote an answer

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Question 9

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. 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.

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 with no traffic allocated. Split the traffic between the current service and the new revision.

D. 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.

Discussion 0

Correct Answer: C Vote an answer

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Question 10

You have an application running in App Engine. Your application is instrumented with Stackdriver Trace. The /product-details request reports details about four known unique products at /sku- details as shown below. You want to reduce the time it takes for the request to complete.
What should you do?

A. Increase the size of the instance class.

B. Store the /sku-details information in a database, and replace the webservice call with a database query.

C. Change the Persistent Disk type to SSD.

D. Change /product-details to perform the requests in parallel.

Discussion 0

Correct Answer: D Vote an answer

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