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

Which type of Azure disk provides consistent low latency performance?

1. Standard HDD

2. Standard SSD

3. Premium SSD

4. File Storage

The correct answer is: Premium SSD

The correct answer is Premium SSD. Premium SSDs are designed to provide high-performance storage with low latency, making them ideal for I/O-intensive applications and workloads that require consistent, predictable performance. They are optimized for scenarios such as virtual machines, cloud applications, and databases that need quick response times and high throughput. Premium SSDs achieve this low latency by leveraging solid-state drive (SSD) technology, which delivers faster data access speeds compared to traditional hard drives. This capability is crucial for applications that demand immediate response times, as it helps to minimize delays when reading from or writing to the disk. In contrast, the other disk types—such as Standard HDD, Standard SSD, and File Storage—do not offer the same level of performance that Premium SSDs do. Standard HDDs are best suited for workloads that are less sensitive to latency and require cost-effective storage options, while Standard SSDs provide better performance than HDDs but do not match the speed and low latency of Premium SSDs. File Storage is designed for shared storage purposes and is not focused on the consistent, low latency performance typically required by high-performance applications.