AWS (Amazon Web Services) Certification Practice Exam

What does the Cached Volume Gateway in AWS Storage Gateway primarily do?

1. Keep all data in the cloud

2. Cache frequently accessed data locally

3. Transfer files to Glacier

4. Serve as a backup solution

The correct answer is: Cache frequently accessed data locally

The Cached Volume Gateway in AWS Storage Gateway is designed to optimize access to frequently used data by caching it locally while storing the primary data in the cloud. This approach improves performance because it retains the most requested data within the local cache, allowing for lower latency data access and faster response times compared to fetching the data from the cloud every time. In this configuration, writes from the local applications are stored temporarily on-premises and are asynchronously sent to Amazon S3. The core functionality revolves around providing users with quick access to their frequently accessed data, balancing on-premises performance needs with the scalable and durable benefits of cloud storage. The other options refer to features or characteristics that do not align with the primary function of the Cached Volume Gateway. For example, keeping all data in the cloud is more aligned with a traditional cloud storage model rather than the caching functionality. Transferring files to Glacier relates more to archiving rather than caching frequently accessed data. Serving as a backup solution does not represent the main purpose of the Cached Volume Gateway, although it can play a role in a broader data management strategy within AWS.