AZ-204 Azure Storage & Data Solutions 1 — Questions and Answers
Question 1: Which Azure Blob Storage access tier is optimized for data that is accessed infrequently and stored for at least 30 days?
- Hot
- Cool (Correct answer)
- Archive
- Premium
Correct answer: Cool
The Cool tier is designed for infrequently accessed data with lower storage costs but higher retrieval costs, with a minimum retention of 30 days.
Question 2: What is the consistency level in Azure Cosmos DB that provides the strongest guarantees but highest latency?
- Eventual
- Consistent Prefix
- Session
- Strong (Correct answer)
Correct answer: Strong
Strong consistency ensures reads always return the most recent committed write and provides linearizability guarantees at the cost of higher latency.
Question 3: Which Azure Storage service should you use to store messages for asynchronous communication between application components?
- Blob Storage
- Table Storage
- Queue Storage (Correct answer)
- File Storage
Correct answer: Queue Storage
Azure Queue Storage provides a reliable message queuing service for asynchronous decoupling between application components.
Question 4: What is the partition key in Azure Cosmos DB primarily used for?
- Sorting documents alphabetically
- Distributing data across physical partitions for scalability (Correct answer)
- Encrypting stored data
- Setting TTL on documents
Correct answer: Distributing data across physical partitions for scalability
The partition key determines how Cosmos DB distributes data and requests across physical partitions to achieve horizontal scalability.
Question 5: Which SAS type in Azure Blob Storage is signed with the storage account key and grants access to the entire service?
- User delegation SAS
- Service SAS
- Account SAS (Correct answer)
- Managed Identity SAS
Correct answer: Account SAS
An Account SAS is signed with the storage account key and can grant access to resources across multiple storage services.
Question 6: Which Azure Blob Storage feature allows you to enforce immutability policies to prevent blobs from being deleted or overwritten?
- Soft delete
- Versioning
- Immutable storage (WORM policies) (Correct answer)
- Legal hold
Correct answer: Immutable storage (WORM policies)
Immutable blob storage supports time-based retention and legal hold WORM (Write Once Read Many) policies to prevent modification or deletion.
AZ-204 Azure Storage & Data Solutions 1
Which Azure Blob Storage access tier is optimized for data that is accessed infrequently and stored for at least 30 days?