At a basic level, cloud computing is simply a means of delivering IT resources as （71）.Almost all IT resources can be delivered as a cloud service: applications, compute power, storage capacity, networking,programming tools,even communication services and collaboration （72）。Cloud computing began as large-scale Internet service providers such as Google,Amazon,and others built out their infrastructure. An architecture emerged: massively scaled, （73） distributed system resources,abstracted as virtual IT services and managed as continuously configured, pooled resources. In this architecture, the data is mostly resident on （74）“somewhere on the Intemet”and the application runs on both the cloud servers”and the user’s browser.Both clouds and grids are built to scale horizontally very efficiently. Both are built towithstand failures of （75） elements or nodes. Both are charged on a per-use basis. But while grids typically process batch jobs, with a defined start and end point, cloud services can be continuous. What’s more, clouds expand the types ofresources available —— file storage, databases, and Web services —— and extend the applicability to Web and enterprise applications.(71)A. hardwareB. computersC. servicesD. software
At a basic level, cloud computing is simply a means of delivering IT resources as （71）.Almost all IT resources can be delivered as a cloud service: applications, compute power, storage capacity, networking,programming tools,even communication services and collaboration （72）。
Cloud computing began as large-scale Internet service providers such as Google,Amazon,and others built out their infrastructure. An architecture emerged: massively scaled, （73） distributed system resources,abstracted as virtual IT services and managed as continuously configured, pooled resources. In this architecture, the data is mostly resident on （74）“somewhere on the Intemet”and the application runs on both the "cloud servers”and the user’s browser.
Both clouds and grids are built to scale horizontally very efficiently. Both are built to
withstand failures of （75） elements or nodes. Both are charged on a per-use basis. But while grids typically process batch jobs, with a defined start and end point, cloud services can be continuous. What’s more, clouds expand the types ofresources available —— file storage, databases, and Web services —— and extend the applicability to Web and enterprise applications.
(71)
A. hardware
B. computers
C. services
D. software
相关考题：
● Although a given waveform. may contain frequencies over a very broad range, as a practical matter any transmission system will be able to accommodate only a limited band of （71） . This, in turn, limits the data rate that can be carried on the transmission （72） . Asquare wave has an infinite number of frequency components and hence an infinite （73） . However, the peak amplitude of the kth frequency component, kf, is only 1/k, so most of the （74） in this waveform. is in the first few frequency components. In general, any digital waveform. will have （75） bandwidth. If we attempt to transmit this waveform. as a signal over any medium, the transmission system will limit the bandwidth that can be transmitted.（71）A. frequencies B. connections C. diagrams D. resources（72）A. procedure B. function C. route D. medium（73）A. source B. bandwidth C. energy D. cost（74）A. frequency B. energy C. amplitude D. phase（75）A. small B. limited C. infinite D. finite（71）A. frequenciesB. connectionsC. diagramsD. resources（72）A. procedureB. functionC. routeD. medium（73）A. sourceB. bandwidthC. energyD. cost（74）A. frequencyB. energyC. amplitudeD. phase（75）A. smallB. limitedC. infiniteD. finite
Although a given waveform. may contain frequencies over a very broad range，as a practical matter any transmission system will be able to accommodate only a limited band of (71) ．This，in turn，limits the data rate that can be carried on the transmission (72) ．Asquare wave has an infinite number of frequency components and hence an infinite (73) ．However, the peak amplitude of the kth frequency component，kf，is only 1/k，so most of the (74) in this wavefonn is in the first few fiequency components．In general，any digitalwaveform. will have (75) bandwidth．If we attempt to transmit this waveform. as a signalover any medium，the transmission system will limit the bandwidth that can be transmitte（71）A．frequenciesB．connectionsC．diagramsD．resources
A transport layer protocol has several responsibilities. One is to create a process-to-process (program-to-program) communication; TCP uses port (71) to accomplish this. Another responsibility of a transport layer protocol is to create a (72) and error-control mechanism at the transport level. TCP uses a sliding (73) protocol to achieve flow control. It uses the acknowledgment packet, time-out, and retransmission to achieve (74) control. The transport layer is also responsible for providing a connection mechanism for the application program. The application program sends (75) of data to the transport layer. It is the responsibility of the transport layer at the sending station to make a connection with the receiver.（71）A．numbersB．connectionsC．diagramsD．resources
（ ） is the use of computing ...deliverd as a service over a network.A.Virtualzation B.Internet of thingsC.ClouD.computer D.ClouD.computing
（）represents the informationassets characterized by such a High volume, Velocity and Variety to requirespecific Technology and Analytical Methods for its transformation into Value.A.Internet plusB.Industry 4.0C.Big dataD.ClouD.computing
（ ）refers to the application of the internet and other information technology inconventional industries .It is an incomplete equation where various internet(mobile internet,cloud computing,big data or internet of things) can be added to other fileds, fostering new industries and business development.A. internet plus B.industry 4.0 C.big dataD.clouD.computing
Without proper safeguards,every part of a network is vulnerable to a security breach or unauthorized activity from（71）,competitors,or even employees.Many of the organizations that manage their own（72）network security and use the Internet for more than just sending/receiving e-mails experience a network（73）—and more than half of these companies do not even know they were attacked.Smaller（74）are often complacent,having gained a false sense of security.They usually react to the last virus or the most recent defacing of their website.But they are trapped in a situation where they do not have the necessary time and（75）to spend on security.A.safeguardsB.businessesC.experiencesD.resources
云开发中下载文件的接口是（）。A．wx.cloud.uploadFileB．wx.cloud.downloadFileC．wx.cloud.deleteFileD．wx.cloud.UploadTask
云开发中删除文件的接口是（）。A．wx.cloud.uploadFileB．wx.cloud.downloadFileC．wx.cloud.deleteFileD．wx.cloud.UploadTask
云开发中上传文件的接口是（）。A．wx.cloud.uploadFileB．wx.cloud.downloadFileC．wx.cloud.deleteFileD．wx.cloud.UploadTask