AWS Certified Advanced Networking Specialty Practice Exam

Which feature can help ensure low latency for applications with high disk performance requirements?

1. Amazon EBS General Purpose SSD

2. Amazon EBS Provisioned Input/Output per Second (IOPS)

3. Amazon S3 Standard Storage

4. Amazon EBS Magnetic Storage

The correct answer is: Amazon EBS Provisioned Input/Output per Second (IOPS)

Provisioned Input/Output per Second (IOPS) is a feature of Amazon EBS that allows users to specify the exact number of IOPS they require for their applications. This capability is crucial for applications that have high disk performance requirements because it ensures consistent and reliable input/output operations. With Provisioned IOPS, users can achieve low latency and high throughput, which is essential for workloads such as database applications, high-performance computing, and other latency-sensitive applications. This feature allows for fine-tuning of performance to meet specific application needs, as users can provision a range of IOPS from 100 to 64,000, depending on the volume type and the size of the EBS volume. By utilizing this level of control, users can optimize their applications for maximum efficiency and performance, effectively reducing the chance of bottlenecks due to inconsistent I/O performance. The other options do not provide the same level of control or performance as Provisioned IOPS. For instance, General Purpose SSD does offer good performance for a variety of workloads but might not guarantee the high performance and low latency that certain demanding applications require. Similarly, Amazon S3 Standard Storage is more suited for object storage use cases and does not deliver the block-level performance needed for high I/O