Change control within information technology（IT）systems is a formal process used to ensure that changes to product or system are introduced in a controlled and coordinated manner.It（74）the possibility that unnecessary changes will be introduced to a systeA.AddsB.RemovesC.ProducesD.Reduces
Change control within information technology（IT）systems is a formal process used to ensure that changes to product or system are introduced in a controlled and coordinated manner.It（74）the possibility that unnecessary changes will be introduced to a syste
A.Adds
B.Removes
C.Produces
D.Reduces
B.Removes
C.Produces
D.Reduces
参考解析
解析：信息技术（IT）系统中的变更控制是一个正式的过程，确保变更是受控的、批准的。应尽可能地减少没有经过评估的变更被引入到系统中。
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The term computer describes a device made up of a combination of electronic and electromechanical components． By itself, a computer has no（ ）and is referred to as hardware, which means simply the physical equipment． The hardware cant be used until it is connected to other elements, all of which constitute the six parts of a computer-based information system, hardware, software, data/information, people, procedures and communications． A system is defined as a collection of related components that（ ）to perform a task in order to accomplish a goal． Any organization that uses information technology will have a computer-based information system to provide managers (and various categories of employees) with the appropriate kind of information to help them make decisions． Systems analysis and design is to ascertain how a system works and then take steps to make it （ ）Often, a system approach is used to define, describe, and solve a problem or to meet a(an)（ ） From time to time, organizations need to（ ）their information systems, in, response to new marketing opportunities, modified government regulations, the introduction ．of new technology, merger with another company, or other developments． When change is needed, the time is ripe for applying the principles of systems analysis and design．A.information B.software C.intelligence D.dataA.interact B.work C.connect D.changeA.improved B.better C.good D.bestA.decision B.need C.standard D.objectiveA.modify B.replace C.changeD.transfer
● （71） analysis emphasizes the drawing of pictorial system models to document and validate both existing and/or proposed systems. Ultimately, the system models become the （72） for designing and constructing an improved system. （73） is such a technique. The emphasis in this technique is process-centered. Systems analysts draw a series of process models called（74） . （75） is another such technique that integrates data and process concerns into constructs called objects.（71）A. PrototypingB. AcceleratedC. Model-drivenD. Iterative（72）A. imageB. pictureC. layoutD. blueprint（73）A. Structured analysisB. Information EngineeringC. Discovery PrototypingD. Object-Oriented analysis（74）A. PERTB. DFDC. ERDD. UML（75）A. Structured analysisB. Information EngineeringC. Discovery PrototypingD. Object-Oriented analysis
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The term computer describes a device made up of a combination of electronic components．By itself, a computer has no ( ) and is referred to as hardware, which means simply the physical equipment． The hardware can't be used until it is connected to other elements, all of which constitute the six parts of a computer-based information system,hardware,software,data/information, people, procedures and communications． A system is defined as a collection of related components that ( ) to perform a task in order to accomplish a goal． Any organization that uses information technology will have a computer-based information system to provide managers (and various categories of employees with the appropriate kind of information to help them make decisions． Systems analysis and design is to ascertain how a system works and then take steps to make it ( ) Often, a system approach is used to define, describe, and solve a problem or to meet a(an)（ ） From time to time, organizations need to (5 ) their information systems, in, response to new marketing' opportunities, modified government regulations, the introduction ．of new technology, merger with another company, or other developments． When change is needed, the time is ripe for applying the principles of systems analysis and design．（5）应选（ ）。 A. modifyB. replaceC. ChangeD. transfer
The term computer describes a device made up of a combination of electronic components．By itself, a computer has no ( ) and is referred to as hardware, which means simply the physical equipment． The hardware can't be used until it is connected to other elements, all of which constitute the six parts of a computer-based information system,hardware,software,data/information, people, procedures and communications．A system is defined as a collection of related components that (请作答此空) to perform a task in order to accomplish a goal． Any organization that uses information technology will have a computer-based information system to provide managers (and various categories of employees with the appropriate kind of information to help them make decisions．Systems analysis and design is to ascertain how a system works and then take steps to make it ( ) Often, a system approach is used to define, describe, and solve a problem or to meet a(an)（ ）From time to time, organizations need to ( )their information systems, in, responseto new marketing' opportunities, modified government regulations, the introduction ．of new technology, merger with another company, or other developments． When change is needed, the time is ripe for applying the principles of systems analysis and design．A.interactB.workC.connectD.change
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A variety of tools is available to help the analyst to discover the users' true needs.These tools are grouped into three broad techniques that are based on the degree of change anticipated in the to-be system . Business process（71） is used when the basic business Requirements outlined in the system request focus on employing computer technology in some aspect of the business process. Two popular activities used in the technique are（72）. Business process（73）means that the basic business requirements target moderate changes to the organization' s operations.（74）are three popular activities in the technique. Business process （75）means changing the current way of doing business and making major changes to take advantage of new ideas and new technology.A.duration analysis anD.outcome analysisB.problem analysis anD.root cause analysisC.technology analysis anD.activity eliminationD.activity-baseD.costing anD.informal bench marking
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