CompTIA Cloud+ Practice Test

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What cloud feature allows Dale to automate storage volume allocation according to usage?

API
Elasticity
SaaS
OpenStack

The correct answer is: Elasticity

The correct choice in this scenario is elasticity. In cloud computing, elasticity refers to the ability of a cloud service to automatically scale resources up or down according to demand. This feature is particularly important for storage solutions, as it allows systems to dynamically allocate and deallocate storage volumes based on current usage patterns. With elasticity, as demand increases—such as when more users access a service or when applications require additional storage—the cloud infrastructure can automatically provision more storage resources. Conversely, when demand decreases, the system can scale down and free up those resources, optimizing costs and ensuring efficient use of storage. While APIs (Application Programming Interfaces) facilitate automated interactions with services, they are not specifically a feature that directly allocates storage based on usage. SaaS (Software as a Service) is a cloud service model that delivers software applications over the internet, but it does not pertain to storage volume allocation directly. OpenStack is an open-source cloud computing platform that can manage cloud environments but does not inherently provide automation for storage allocation without specific configurations or implementations. Thus, elasticity is the most relevant feature for automating storage volume allocation based on current usage.