A company wants to build a test environment to test software updates and new solutions. The environment should mirror the production environment and be secure and inaccessible from outside the company network. The company does not want to invest in infrastructure that may be idle for a significant amount of time. Which cloud computing model will satisfy all these requirements?

An enterprise cloud is a unified IT operating environment that melds private cloud, public cloud, and distributed cloud, providing a single point of control for managing infrastructure and applications in any cloud.

Note: Some questions in this big practice test test your knowledge of IBM Cloud (formerly known as Bluemix) is a set of cloud computing services for business offered by the information technology company IBM.