AZ-900 Describe Azure architecture and services Practice Question

Answer analysis

Option-by-option breakdown

For each option: why learners choose it and why it is or isn't the right answer here.

• ✗

  Azure Files

  Why it's wrong here

  Azure Files is a managed file share service that provides SMB and NFS protocol access, making it ideal for lifting and shifting on-premises file servers or for shared file access across VMs. It is not optimized for unstructured object storage because it stores data as files with a hierarchical directory structure, not as discrete objects with metadata and a flat namespace. The performance and access patterns for file shares are designed for concurrent file read/write operations, not for massive-scale blob data like images, videos, or backups.

• ✗

  Azure Queue Storage

  Why it's wrong here

  Azure Queue Storage is a cloud messaging service used to decouple application components and enable reliable communication through asynchronous message passing. It stores small messages (up to 64 KB) in a queue, and its purpose is to provide a temporary buffer between a producer and consumer, not to persist large amounts of unstructured data. Since it is transaction-centric and message-oriented, it lacks the object-level metadata, immutability, and lifecycle management features that blob storage provides, making it completely unsuitable for storing images, videos, or logs.

• ✓

  Azure Blob Storage

  Why this is correct

  Azure Blob Storage is purpose-built for unstructured data, meaning any data that does not have a defined relational schema, such as images, videos, logs, and backup archives. It stores data as objects (blobs) within containers, with each blob having its own metadata and a unique URL, enabling efficient access via HTTP/HTTPS and integration with tools like AzCopy and Azure Data Factory. Blob Storage offers tiered storage (hot, cool, cold, archive), lifecycle management, and immutable storage policies, making it the optimal choice for massive-scale, low-cost storage of unstructured data.

• ✗

  Azure Table Storage

  Why it's wrong here

  Azure Table Storage is a NoSQL column-based store that houses structured key-value data, such as user data, device telemetry, or configuration settings. It is designed for fast, highly available access to structured entities with a partition key and row key, not for storing binary or large unstructured files. Because it enforces a schema-like entity structure and lacks blob-centric features like content-type handling and block-level optimization, it is technically incorrect to use for image or video storage.

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