Google PROFESSIONAL-CLOUD-DEVELOPER Online Practice Questions and Exam Preparation

Google PROFESSIONAL-CLOUD-DEVELOPER Online Questions & Answers

• Question 401:

  You have an analytics application that runs hundreds of queries on BigQuery every few minutes using BigQuery API. You want to find out how much time these queries take to execute.

  What should you do?

  A. Use Stackdriver Monitoring to plot slot usage.
  B. Use Stackdriver Trace to plot API execution time.
  C. Use Stackdriver Trace to plot query execution time.
  D. Use Stackdriver Monitoring to plot query execution times.
  D. Use Stackdriver Monitoring to plot query execution times.

• Question 402:

  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?

  A. Each developer commits their code to the main branch before each product release, conducts testing, and rolls back if integration issues are detected.
  B. Each group of developers copies the repository, commits their changes to their repository, and merges their code into the main repository before each product release.
  C. Each developer creates a branch for their own work, commits their changes to their branch, and merges their code into the main branch daily.
  D. Each 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.
  C. Each developer creates a branch for their own work, commits their changes to their branch, and merges their code into the main branch daily.

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  Explanation

  Following Google-recommended practices, frequent integration is key to reducing integration issues and driving higher rates of software delivery. By having each developer create their own branch, make commits, and merge into the main branch daily, the team ensures that integration happens continuously. This trunk-based development approach encourages regular testing and validation, making it easier to detect issues early and avoid large, complex integrations before releases.

  This practice also aligns with CI/CD principles, which emphasize small, frequent commits and continuous integration to maintain high code quality and accelerate development velocity.

• Question 403:

  You are developing a short-term image hosting service where end users around the world can upload images that are up to 20MB, and the images will be automatically deleted after 10 days. You need to determine how the images should be stored while minimizing cost.

  How should you store the images?

  A. Write the image to a Cloud Storage bucket. Create a lifecycle configuration that deletes objects 10 days older than their creation date.
  B. Write the images to Spanner. Configure a row deletion policy on the table that deletes rows 10 days older than their creation date.
  C. Write the images to Firestore. Deploy a Cloud Scheduler-invoked Cloud Run service that queries for documents written 10 days prior to today and deletes them.
  D. Write the images to Bigtable. Configure a garbage collection policy for the column family that deletes cells 10 days older than their creation date.
  A. Write the image to a Cloud Storage bucket. Create a lifecycle configuration that deletes objects 10 days older than their creation date.

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  Explanation

  Cloud Storage is a cost-effective solution for storing large objects like images, especially for short-term storage. By configuring a lifecycle policy, you can automatically delete objects after 10 days, aligning perfectly with your requirement to remove images after that period. This approach minimizes cost by avoiding the need for active management or scheduled deletion processes.

  Using Spanner, Firestore, or Bigtable would generally be more expensive and less optimal for storing large files like images, as these services are better suited for structured or semi-structured data rather than binary objects (such as images).

• Question 404:

  You need to ensure that a Pub/Sub message is processed at least once by your subscriber application.

  Which subscription type should you use?

  A. Push subscription without acknowledgment
  B. Pull subscription with acknowledgment
  C. Push subscription without retry policy
  D. Snapshot subscription
  B. Pull subscription with acknowledgment

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  Explanation

  Pull subscriptions allow the subscriber to acknowledge messages after successful processing. If a message is not acknowledged, Pub/Sub redelivers it, ensuring at-least-once delivery.

• Question 405:

  You are using Cloud Build to create a new Docker image on each source code commit to a Cloud Source Repositories repository. Your application is built on every commit to the master branch. You want to release specific commits made to the master branch in an automated method.

  What should you do?

  A. Manually trigger the build for new releases.
  B. Create a build trigger on a Git tag pattern. Use a Git tag convention for new releases.
  C. Create a build trigger on a Git branch name pattern. Use a Git branch naming convention for new releases.
  D. Commit your source code to a second Cloud Source Repositories repository with a second Cloud Build trigger. Use this repository for new releases only.
  B. Create a build trigger on a Git tag pattern. Use a Git tag convention for new releases.