TLS would be used with data in transit, when packets are exchanged between clients or services and sent across a network. During the data-in-use state, the data is already protected via a technology such as TLS as it is exchanged over the network and then relies on other technologies such as digital signatures for protection while being used. The data-at-rest state primarily uses encryption for stored file objects.
Archived data would be the same as data at rest.

Explanation
When leasing space in a data center versus utilizing cloud services, a customer has a much greater control over its systems and services, from both the hardware/software perspective and the operational management perspective. Costs, regulations, and security are all prime considerations regardless of the hosting type selected. Although regulations will be the same in either hosting solution, in most instances, costs and security will be greater factors with leased space.

Explanation
SIEM does not intend to provide any enhancement of performance; in fact, a SIEM solution may decrease performance because of additional overhead. All the rest are goals of SIEM implementations.

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

An OLA defines how internal groups (like network ops, helpdesk, etc.) will cooperate to deliver a service. SLAs are customer-facing. OLAs ensure internal processes meet SLA commitments.