Microsoft Azure Solutions Architect Expert AZ-305 Practice Question

Blob versioning automatically captures a new, immutable version every time a blob is modified. Applying a seven-year time-based immutable storage policy to the container enforces WORM retention for every version. A general-purpose v2 storage account configured with Read-Access Geo-Redundant Storage (RA-GRS) keeps three synchronous replicas in the primary region and asynchronously maintains a second set of replicas in a paired region, while also exposing a secondary read-only endpoint. RA-GRS therefore keeps the data immediately readable during a regional outage and costs less than geo-zone-redundant options such as RA-GZRS. Because analytics jobs read only from the primary region, asynchronous replication does not add latency, making RA-GRS the lowest-cost solution that satisfies both the WORM and cross-region availability requirements.

Incorrect choices:

• ZRS with soft delete lacks WORM enforcement and provides no regional redundancy.
• GRS without read access does not guarantee immediate availability during a regional outage because access to the secondary region is blocked until Microsoft initiates failover.
• Azure Cosmos DB with continuous backup is optimized for NoSQL data, costs more than Blob storage, and is unnecessary for simple file retention.