Google Professional-Cloud-Developer Exam Actual Questions

Name: Professional Cloud Developer
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SKU: Professional-Cloud-Developer
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The questions for Professional-Cloud-Developer were last updated on Oct 3, 2024.

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Question No. 1

You manage a microservice-based ecommerce platform on Google Cloud that sends confirmation emails to a third-party email service provider using a Cloud Function. Your company just launched a marketing campaign, and some customers are reporting that they have not received order confirmation emails. You discover that the services triggering the Cloud Function are receiving HTTP 500 errors. You need to change the way emails are handled to minimize email loss. What should you do?

AIncrease the Cloud Function's timeout to nine minutes.

BConfigure the sender application to publish the outgoing emails in a message to a Pub/Sub topic. Update the Cloud Function configuration to consume the Pub/Sub queue.

CConfigure the sender application to write emails to Memorystore and then trigger the Cloud Function. When the function is triggered, it reads the email details from Memorystore and sends them to the email service.

DConfigure the sender application to retry the execution of the Cloud Function every one second if a request fails.

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Correct Answer: B

This is a robust and scalable approach. By decoupling the email sending process using Pub/Sub, you introduce a queueing mechanism. This ensures that even if the Cloud Function encounters an issue, the email messages are not lost but remain in the queue. Additionally, Pub/Sub can handle high throughput and provides retry mechanisms.

Question No. 2

You work on an application that relies on Cloud Spanner as its main datastore. New application features have occasionally caused performance regressions. You want to prevent performance issues by running an automated performance test with Cloud Build for each commit made. If multiple commits are made at the same time, the tests might run concurrently. What should you do?

ACreate a new project with a random name for every build. Load the required data. Delete the project after the test is run.

BCreate a new Cloud Spanner instance for every build. Load the required data. Delete the Cloud Spanner instance after the test is run.

CCreate a project with a Cloud Spanner instance and the required data. Adjust the Cloud Build build file to automatically restore the data to its previous state after the test is run.

DStart the Cloud Spanner emulator locally. Load the required data. Shut down the emulator after the test is run.

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Correct Answer: B

Since the testing needs to accommodate scenarios where multiple commits are made simultaneously, and hence multiple tests might run concurrently, the testing environment should support isolated and independent testing instances to avoid interference among tests. Given these requirements, using the Cloud Spanner emulator would not be the best choice for this scenario. The emulator is primarily suited for local development, unit, and integration testing, and is not built for production-scale performance testing. It may not accurately replicate performance characteristics at scale or under load, which are crucial aspects in this case.

Question No. 3

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

AImport 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.

BCreate 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.

CImport 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 which functions cause the most latercy.

DAdd print commands to the application source code to log when each function is called, and redeploy the application.

Show Answer

Correct Answer: A

Google Cloud Profiler efficiently analyzes cloud-based applications, like those on GKE, using minimal code changes and flame graphs for in-depth insights into CPU and memory usage, thus identifying performance bottlenecks with ease. For more information, visit: https://dev.to/billcchung/profiling-go-grpc-service-with-google-cloud-profiler-1k8l and https://www.cncf.io/blog/2020/03/27/continuous-profiling-go-application-running-in-kubernetes/

Question No. 4

You are a developer at a large organization. Your team uses Git for source code management (SCM). You want to ensure that your team follows Google-recommended best practices to manage code to drive higher rates of software delivery. Which SCM process should your team use?

AEach group of developers creates a feature branch from the main branch for their work, commits their changes to their branch, and merges their code into the main branch before each major release.

BEach developer commits their code to the main branch before each product release, conducts testing, and rolls back if integration issues are detected.

CEach group of developers copies the repository, commits their changes to their repository, and merges their code into the main repository before each product release.

DEach developer creates a branch for their own work, commits their changes to their branch, and merges their code into the main branch after peer review.

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Correct Answer: D

Question No. 5

A governmental regulation was recently passed that affects your application. For compliance purposes, you are now required to send a duplicate of specific application logs from your application's project to a project that is restricted to the security team. What should you do?

AModify the _Default tog bucket sink rules to reroute the logs into the security team's log bucket.

BCreate user-defined log buckets in the security team's project. Configure a Cloud Logging sink to route your application s logs to log buckets in the security team's project.

CCreate a job that copies the System Event logs from the _Required log bucket into the security team's log bucket in their project.

DCreate a job that copies the togs from the _Required log bucket into the security team's log bucket in their project.

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Correct Answer: B

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