Minimum Guaranteed Resource

A.

A reservation is a minimum resource that is guaranteed to a customer within a cloud environment.

Within a cloud, a reservation can pertain to the two main aspects of computing: memory and processor.

With a reservation in place, the cloud provider guarantees that a cloud customer will always have at minimum the necessary resources available to power on and operate any of their services.

The answer to the question is A. Reservation.

In a cloud environment, the cloud service provider offers various resources such as computing power, storage, and bandwidth to its customers. The customers can use these resources to deploy their applications and services in the cloud. However, the cloud service provider also needs to ensure that the resources are available to the customers when they need them. To achieve this, the cloud service provider offers different service level agreements (SLAs) to the customers, which specify the minimum guaranteed resources that the customer can expect.

One of the ways in which the cloud service provider guarantees resources to the customer is through resource reservations. A resource reservation is a commitment by the cloud service provider to provide a certain amount of resources to the customer for a specified period. The customer can use these reserved resources at any time, and the cloud service provider cannot allocate them to other customers.

For example, a customer might reserve a certain amount of computing power and storage for their application in the cloud. The cloud service provider will guarantee that the reserved resources will be available to the customer whenever they need them, even if other customers are using the cloud at the same time. The customer can use these reserved resources to scale their application up or down as needed, without worrying about resource availability.

In contrast, a resource share is a portion of the cloud resources that are allocated to the customer on a best-effort basis. The cloud service provider does not guarantee any specific amount of resources, and the customer might experience resource contention if other customers are using the cloud heavily at the same time.

A resource limit is a cap on the amount of resources that the customer can use in the cloud. The cloud service provider might set resource limits to prevent any single customer from monopolizing the cloud resources or to ensure that the overall performance of the cloud remains stable.

Finally, resource provision refers to the process of allocating resources to the customer on an as-needed basis. The cloud service provider might provision additional resources to the customer if they exceed their resource limit or if they need to scale their application up.

In summary, a resource reservation represents a minimum guaranteed resource within a cloud environment for the cloud customer, which is why it is the correct answer to the question.