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Exam Professional Cloud Developer topic 1 question 285 discussion

Actual exam question from Google's Professional Cloud Developer
Question #: 285
Topic #: 1
[All Professional Cloud Developer Questions]

You are designing a Node.js-based mobile news feed application that stores data on Google Cloud. You need to select the application's database. You want the database to have zonal resiliency out of the box, low latency responses, ACID compliance, an optional middle tier, semi-structured data storage, and network-partition-tolerant and offline-mode client libraries. What should you do?

  • A. Configure Firestore and use the Firestore client library in the app.
  • B. Configure Bigtable and use the Bigtable client in the app.
  • C. Configure Cloud SQL and use the Google Client Library for Cloud SQL in the app.
  • D. Configure BigQuery and use the BigQuery REST API in the app.
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Suggested Answer: A 🗳️
by anshad666 at Oct. 12, 2024, 4:26 a.m.

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saratk1984
1 month, 2 weeks ago
Selected Answer: A
1. Why Firestore? Zonal resiliency out of the box Firestore in Native mode is a multi-region and zonal resilient service by default. 2. Low latency responses Designed for low-latency mobile/web applications, ideal for real-time feeds. 3. ACID compliance Supports ACID transactions, including across documents in a collection. 4. Optional middle tier Supports direct access via SDKs (no middle tier needed), or via APIs through servers 5. Semi-structured data storage Stores documents (JSON-like) – ideal for semi-structured, schema-flexible data. 6. Network-partition-tolerant and offline mode Offline persistence and real-time sync for mobile apps; resilient to network issues.
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anshad666
6 months, 3 weeks ago
Selected Answer: A
Other options like Bigtable (B) and BigQuery (D) do not meet the ACID compliance requirement, while Cloud SQL (C) is not optimized for semi-structured data and mobile offline capabilities.
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