Explanation
Baselines are a set of configurations and policies applied to all new systems or services, and they serve as the basis for deploying any other services on top of them. Although standards often form the basis for baselines, the term is applicable in this case. Hardening is the process of securing a system, often through the application of baselines. Leveling is an extraneous but similar term to baselining.

Explanation
When a key management system is outside of the cloud environment hosting the application, availability is a primary concern because any access issues with the encryption keys will render the entire application unusable.

Explanation
Option B is incorrect, because it refers to a specific applications security elements, meaning it is about an ANF, not the ONF. C is true, but not as complete as D, making D the better choice. C suggests that the framework contains only "some" of the components, which is why B (which describes "all" components) is better

Explanation
The goal with any cloud-hosting setup is for the cloud customer to be able to perform most or all its functions for service provisioning and configuration without any need for support from or interaction with the cloud provider beyond the automated tools provided. To fulfill the tenants of on-demand self-service, required interaction with the cloud provider--either half time, full time, or a commensurate amount of time based on the contract--would be in opposition to a cloud's intended use. As such, these answers are incorrect.