A media archive stores uploaded videos, PDFs, and JPEG photos in Azure Storage. Each file is uploaded whole and read back whole, and the archive never appends to files or backs a virtual machine disk. Which blob type should it use?
Show answer and explanation
Answer: B
Block blobs are the default type for discrete files that are uploaded and downloaded as whole units, such as videos, PDFs, and photos. They are built from blocks that can be uploaded in parallel. Page blobs suit random read and write workloads such as virtual machine disks, append blobs suit log-style writes that only add to the end, and Azure Files provides SMB or NFS file shares rather than blob object storage.
Why the other options are wrong
- A. Page blobs are optimized for random-access reads and writes, which is why they back virtual machine disks. A media archive does not need that access pattern.
- C. Append blobs are built for data that only grows at the end, such as application logs. Whole-file uploads of videos and photos do not fit that model.
- D. Azure Files exposes file shares over SMB or NFS for lift-and-shift applications. The scenario is about object storage of whole files, which is a blob service use case.