20+ practice questions focused on Design data storage solutions — one of the most tested topics on the Microsoft Azure Solutions Architect Expert AZ-305 exam. Each question includes a detailed explanation so you learn why the right answer is correct.
Start Design data storage solutions PracticeA multinational company stores large amounts of unstructured data (documents, images) that must be read with low latency from multiple global regions. Data is written primarily in one region but read globally. Cost optimization is a key requirement. Which Azure storage replication option should they use?
Explanation: B is correct because RA-GRS provides geo-redundant storage with read access to the secondary region, enabling low-latency reads from multiple global regions while maintaining cost efficiency. The data is written primarily in one region, but RA-GRS allows read requests to be served from the secondary region without additional compute costs, meeting the global read requirement.
A startup is building a social media analytics platform that processes streaming data. They need a data store for time-series events with high write throughput and fast timestamp-based range queries. Which Azure data store is most suitable for this workload?
Explanation: Azure Table Storage is a NoSQL key-value store that supports high-volume, low-latency writes and efficient range queries on the PartitionKey and RowKey, which can be structured as a timestamp for time-series data. Its schema-less design and ability to scale to massive throughput without sharding overhead make it ideal for streaming event ingestion and timestamp-based retrieval.
A company ingests millions of IoT events per second from sensors around the world. Each event is a JSON message with timestamp, device ID, and readings. They need to support real-time analytics dashboards and also store all raw data for long-term historical analysis. They want to minimize operational overhead. Which Azure data storage solution should they recommend?
Explanation: Azure Event Hubs is designed for high-throughput data ingestion, capable of handling millions of events per second. By enabling the Capture feature, data is automatically and durably persisted to Azure Data Lake Storage in Avro format, providing a serverless, low-latency pipeline for real-time dashboards while storing raw data for long-term analytics. This minimizes operational overhead by eliminating the need to manage separate ingestion and storage infrastructure.
A company runs a legacy application on Azure Virtual Machines. The application uses a SQL Server database that requires 50,000 IOPS consistently. It also uses a shared file system for storing documents. They plan to migrate from on-premises where they used a SAN for block storage and NAS for file shares. Which combination of Azure storage should they use to meet performance requirements?
Explanation: Premium SSD v2 disks can deliver up to 80,000 IOPS per disk, easily meeting the 50,000 IOPS requirement for the SQL Server database. Azure Files premium tier uses SSD-backed storage and provides consistent low-latency performance suitable for a shared file system, replacing the on-premises NAS. This combination directly maps the SAN (block) and NAS (file) workloads to Azure's highest-performance managed disks and file shares.
A company needs a fully managed NoSQL database for a JSON document-oriented application that requires low latency (single-digit milliseconds) for reads and writes at any scale. The application will run globally and needs multi-region writes with automatic failover. Which Azure data store should they use?
Explanation: Azure Cosmos DB is the correct choice because it is a fully managed NoSQL database that natively supports JSON documents, offers single-digit millisecond latency for reads and writes at any scale, and provides multi-region writes with automatic failover through its multi-master replication capability. Its global distribution model allows you to configure multiple write regions, ensuring high availability and low latency worldwide.
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Practice all Design data storage solutions questions1. Baseline your knowledge
Start with 10 questions to gauge your current understanding of Design data storage solutions. This tells you whether you need a concept refresher or just practice.
2. Review every explanation
For each question — right or wrong — read the full explanation. Understanding why an answer is correct is more valuable than knowing the answer itself.
3. Focus on exam traps
Design data storage solutions questions on the AZ-305 frequently use trap wording. Look for subtle differences in answers that test your precision, not just general knowledge.
4. Reach 80% consistently
Do repeated sessions until you score 80%+ three times in a row. Then move to mixed-mode practice to test cross-topic recall under realistic conditions.
The exact number varies per candidate. Design data storage solutions is tested as part of the Microsoft Azure Solutions Architect Expert AZ-305 blueprint. Practicing with targeted Design data storage solutions questions ensures you can handle any format or difficulty that appears.
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Difficulty is subjective, but Design data storage solutions is a high-priority exam concept tested in multiple ways — direct recall, scenario analysis, and command-output interpretation. Consistent practice is the best way to build confidence.
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