Microsoft Certified: Azure Fundamentals (AZ-900) Practice Exam

Which type of blobs are made up of blocks of data that can be managed individually?

1. Block Blobs

2. Append Blobs

3. Page Blobs

4. Archive Blobs

The correct answer is: Block Blobs

Block Blobs are indeed comprised of blocks of data that can be managed individually, which makes them suitable for storing large amounts of unstructured data, such as text and binary data. Each block can be uploaded or deleted independently without the need to replace the entire Blob. This feature is beneficial for scenarios where you might want to update parts of the Blob without having to re-upload the entire file, making Block Blobs efficient for performance and storage management. In contrast, Append Blobs are designed for append operations, often used for scenarios like logging, where data is added but not modified. Page Blobs are structured to handle random read/write operations and are commonly utilized for virtual hard disks due to their ability to manage a large size with varying disk block sizes. Archive Blobs are used for storing infrequently accessed data at a lower cost but do not have the individual block management capabilities that Block Blobs offer. Hence, Block Blobs are the most fitting choice for the requirement of individually manageable data blocks.