AZ-305 Question 79
Select 2A global manufacturing company receives large volumes of semi-structured JSON telemetry from factory sensors and stores unstructured images of each product for quality control. They want a cost-effective, scalable solution to store both the sensor data for near real-time analytics and the images for archival and occasional retrieval. Which two Azure services are most appropriate for these requirements?
- A
Azure Data Lake Storage Gen2
- B
Azure Blob Storage
- C
Azure Table Storage
- D
Azure Files
Show answer and explanation
Correct answers: A, B
Explanation
For large-scale, semi-structured telemetry data, Azure Data Lake Storage Gen2 offers hierarchical namespace, big data analytics integration, and the ability to handle massive throughput. For unstructured image files, Azure Blob Storage provides cost-effective storage tiers and high durability. Azure Table Storage does not support advanced analytical queries or handle large file types well, and Azure Files is best suited for SMB-based file sharing scenarios rather than massive data ingestion. For more details, refer to Microsoft’s documentation on choosing an optimal data storage product (https://docs.microsoft.com/azure/architecture/guide/technology-choices/data-store-overview).
- A. Correct.
Option 1: Azure Data Lake Storage Gen2 is a good fit for storing and analyzing large volumes of semi-structured data (like JSON telemetry) at scale. It integrates well with big data processing services such as Azure Synapse Analytics or Azure Databricks for near real-time analytics scenarios.
- B. Correct.
Option 2: Azure Blob Storage excels at cost-effective storage for unstructured data, including product images. You can use different tiers (hot, cool, archive) to optimize storage costs depending on access patterns, making it suitable for images that are not accessed frequently.
- C. Incorrect.
Option 3: Azure Table Storage stores key-value pairs and is optimized for structured NoSQL scenarios. It’s not designed for massive telemetry ingestion and analytics, and it cannot store images as effectively as Blob Storage.
- D. Incorrect.
Option 4: Azure Files provides an SMB file share in the cloud. While useful for shared file systems, it’s not ideal for large-scale telemetry or unstructured data with analytics. It lacks the scalability and cost-effectiveness for massive IoT or image workloads compared to Data Lake Storage or Blob Storage.