( ) is a style of computing in which dynamically scalable and offer virtualized resources are provided as a service over the Internet.A.ClouD computing B.Big data C.Social media D.Mobile computing

A.DHCP

B.RADIUS server

C.local address pools

D.static IP assignmen

Cloud computing is a phrase used to describe a variety of computing concepts that involve a large number of computers（ ）through a real-time communication network such as the Internet. In science, cloud computing is a（ ）for distributed computing over a network, and means the（ ）to run a program or application on many connected computers at the same time. The architecture of a cloud is developed at three layers: infrastructure, platform, and application, The infrastructure layer is built with virtualized computer, storage, and network resources. The platform layer is for general-purpose and repeated usage of the collection of software resources. The application layer is formed with a collection of all needed software modules for SaaS applications. The infrastructure layer serves as the（ ）for building the platform layer of the cloud. In turn, the platform layer is a foundation for implementing the（ ）layer for SaaS applications.

A.connectedB.imlementedC.optimizedD.VirtualizedA.replacementB.switchC.substituteD.synonym(同义词)A.abilityB.applroachC.functionD.methodA.networkB.foundationC.softwareD.hardwareA.resoruceB.serviceC.applicationD.software

Virtualization is an approach to IT that pools and shares(71)so that utilization is optimized and supplies automatically meet demand. Traditional IT environments are often silos, where both technology and human(72)are aligned around an application or business function. With a virtualized(73), people, processes, and technology are focused on meeting service levels,(74)is allocated dynamically, resources are optimized, and the entire infrastructure is simplified and flexible. We offer a broad spectrum of virtualization(75)that allows customers to choose the most appropriate path and optimization focus for their IT infrastructure resources.

A．advantages

B．resources

C．benefits

D．precedents

Cloud computing is a style of computing in which dynamically scalabled often ( ) resources are provided as a service over the internet.

A.real

B.rixed

C.actual

D.virtualized

is the use of computing resources (hardware and software) that a delivered as a service over a network (typically the Internet).

A.Virtualization

B.Internet of things

C.Cloud computer

D.Cloud computing

The goal of（ ）is to provide easy ，scalable access to computing resources and IT services.

A.Artificial intelligenceB.big dataC.cloud computingD.data mining

（ ）is a style of computing in which dynamically scalable and offer virtualized resources are provided as a service over the Internet.

A. Cloud computing B. Big dataC. Social media D. Mobile computing

A.IP

B.ATM

C.PPPoA

D.PPPoE

Cloud computing is a style of computing in which dynamically scalable and often （ ）resources are provided as a service over the internet.

A.realB.fixedC.actualD.virtualized

Cloud-computing providers offer their “services” according to different models, which happen to form a stack（ ）, platform as a service (Paas), software as a service (SaaS)

A.hardware as a service (Haas)

B.network as a service (NaaS)

C.infrastructure as a service (IaaS)

D.data as a service (DaaS)