Untitled Quiz

Cloud computing refers to both the applications delivered as services over the Internet and the hardware and system software in the datacenters that provide those services.

Cloud computing is a model for enabling ubiquitous, convenient, on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction.

A cloud is a type of parallel and distributed system consisting of a collection of interconnected and virtualized computers that are dynamically provisioned and presented as one or more unified computing resources based on service-level agreements established through negotiation between the service provider and consumers.

The service is accessible via a Web browser (nonproprietary) or a Web services application programming interface (API). Zero capital expenditure is necessary to get started. You pay only for what you use as you use it.

A cloud is a collection of interconnected and virtualized computers that are dynamically provisioned and presented as one or more unified computing resources based on service-level agreements.

A public cloud is an environment in which the IT infrastructure is established by a third-party service provider and made available to any consumer on a subscription basis.

A private cloud is an environment in which the IT infrastructure is established and maintained by a company or organization for its own use.

A hybrid cloud is an environment in which a mixture of public and private cloud resources are used.

Cloud computing services offerings are classified into three major categories: Infrastructure-as-a-Service (IaaS), Platform-as-a-Service (PaaS), and Software-as-a-Service (SaaS).

Infrastructure-as-a-Service (IaaS) is a cloud computing service model in which an organization outsources the hardware, software, networking, and storage resources to a third-party provider.

Platform-as-a-Service (PaaS) is a cloud computing service model in which an organization outsources the development and execution environment for applications to a third-party provider.

Software-as-a-Service (SaaS) is a cloud computing service model in which an organization outsources the software and its associated application logic execution environment to a third-party provider.

Web 2.0 technologies play a central role in making cloud computing an attractive opportunity for building computing systems. They have transformed the Internet into a rich application and service delivery platform, mature enough to serve complex needs.

Cloud computing is based on the concept of dynamic provisioning, which is applied not only to services but also to compute capability, storage, networking, and IT infrastructure in general.

Service orientation allows cloud computing to deliver its capabilities with familiar abstractions.

Virtualization confers on cloud computing the necessary degree of customization, control, and flexibility for building production and enterprise systems.

Cloud computing is an extremely flexible environment for building new systems and applications.

Cloud computing provides an opportunity for integrating additional capacity or new features into existing systems.

Cloud computing allows renting infrastructure, runtime environments, and services on a pay-per-use basis.

Cloud computing is a more attractive opportunity than buying additional infrastructure and software, the sizing of which can be difficult to estimate and the needs of which are limited in time.

Cloud computing is a new paradigm for the dynamic provisioning of computing services supported by state-of-the-art data centers employing virtualization technologies for consolidation and effective utilization of resources.

The long-term vision of cloud computing is that IT services are traded as utilities in an open market, without technological and legal barriers.

A global cloud market also reduces the barriers between service consumers and providers.

With the wide deployment of cloud computing systems, the foundation technologies and systems enabling them are becoming consolidated and standardized.

By concentrating the core capabilities of cloud computing into large datacenters, it is possible to reduce or remove the need for any technical infrastructure on the service consumer side.

This consolidation model will reduce the waste of energy and carbon emissions, thus contributing to a greener IT on one end and increasing revenue on the other end.

Cloud computing is often associated with virtualized infrastructure or hardware on demand, utility computing, IT outsourcing, platform and software as a service, and many other things that now are the focus of the IT industry.

The term cloud has historically been used in the telecommunications industry as an abstraction of the network in system diagrams.

The Internet plays a fundamental role in cloud computing, since it represents either the medium or the platform through which many cloud computing services are delivered and made accessible.

The use of dynamically provisioned IT resources constitutes a more attractive opportunity than buying additional infrastructure and software, the sizing of which can be difficult to estimate and the needs of which are limited in time.

Large enterprises can offload some of their activities to cloud-based systems.

Small enterprises and start-ups can afford to translate their ideas into business results more quickly, without excessive up-front costs.

System developers can concentrate on the business logic rather than dealing with the complexity of infrastructure management and scalability.

End users can have their documents accessible from everywhere and any device.

The entire stack of a computing system is transformed into a collection of utilities, which can be provisioned and composed together to deploy systems in hours rather than days and with virtually no maintenance costs.