Which two models are the models of DiffServ-Aware Traffic En

题目
多选题
Which two models are the models of DiffServ-Aware Traffic Engineering? ()
A

Policy-based Model

B

Class based Model

C

Russian Doll Model

D

Global Tunnel Model

E

Maximum Allocation Model

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相似问题和答案

第1题:

(b) Discuss ways in which the traditional budgeting process may be seen as a barrier to the achievement of the

aims of EACH of the following models for the implementation of strategic change:

(i) benchmarking;

(ii) balanced scorecard; and

(iii) activity-based models. (12 marks)


正确答案:
(b) Benchmarking
Benchmarks enable goals to be set that may be based on either external measures of ‘best practice’ organisations or internal
cross-functional comparisons which exhibit ‘best practice’. A primary aim of the traditional budgeting process is the setting of
realistic targets that can be achieved within the budget period. The setting of realistic targets means that the extent of
underperformance against ‘best practice’ standards loses visibility, and thus short-term financial targets remain the
predominant focus of the traditional budgeting process. It is arguable that because the budgetary reporting system purports
to give managers ‘control’, there is very little real incentive to seek out benchmarks which may be used to raise budgeted
performance targets. Much depends upon the prevailing organisational culture since benchmarking may be viewed as an
attempt by top management to impose impossible targets upon operational managers. The situation is further exacerbated
where organisations do not measure their success relative to their competition.
Balanced scorecard
The Balanced scorecard is often misunderstood as a consequence of the failure by top management to ensure that it is
implemented effectively within the organisation. Thus it may be viewed as the addition of a few non-financial measures to
the conventional budget. In an attempt to overcome this misperception many management teams now establish a
performance-rewards linkage based upon the achievement of Scorecard targets for the forthcoming budget period.
Unfortunately this can precipitate dysfunctional behaviour at every level within the organisation.
Even in situations where the Scorecard has been well-designed and well-implemented it is difficult for it to gain widespread
acceptance. This is because all too often there exists a culture which places a very high value upon the achievement of the
fixed annual targets in order to avoid the loss of status, recognition and rewards.
A well-constructed Scorecard contains a mix of long-term and short-term measures and therefore drives the company in the
direction of medium-term strategic goals which are supported by cross-functional initiatives. On the other hand, the budgeting
process focuses the organisation on the achievement of short-term financial goals supported by the initiatives of individual
departments. Budgets can also act as an impediment to the acceptance of responsibility by local managers for the
achievement of the Scorecard targets. This is often the case in situations where a continued emphasis exists on meeting shortterm
e.g. quarterly targets.
Activity-based models
Traditional budgets show the costs of functions and departments (e.g. staff costs and establishment costs) instead of the costs
of those activities that are performed by people (e.g. receipt of goods inwards, processing and dispatch of orders etc). Thus
managers have no visibility of the real ‘cost drivers’ of their business. In addition, it is probable that a traditional budget
contains a significant amount of non-value-added costs that are not visible to the managers. The annual budget also tends
to fix capacity for the forthcoming budget period thereby undermining the potential of Activity-based management (ABM)
analysis to determine required capacity from a customer demand perspective. Those experienced in the use of ABM
techniques are used to dealing with such problems, however their tasks would be much easier to perform. and their results
made more reliable if these problems were removed.

第2题:

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.

A.Prototyping

B.Accelerated

C.Model-driven

D.Iterative


正确答案:C

第3题:

In which of the following cost estimating techniques are statistics models used:

A . nonparametric cost estimating

B . parametric cost estimating

C . life cycle cost estimating

D . bottom-up estimating

E . All of the above.


正确答案:B

第4题:

Besides the __请作答该选项_ for process and data of current system, the deliverable from this phase also includes the ____ for the proposed system.

A.logical models
B.physical models
C.design models
D.implementation models

答案:A
解析:

第5题:

The purpose of the systems analysis phase is to build a logical model of the new system.The first step is(71),where you investigate business processes and document what the new system must do to satisfy users. This step continues the investigation that began during the(72). You use the fact-finding results to build business models,data and process models,and object models. The deliverable for the systems analysis phase is the(73),which describes management and user requirements,costs and benefits,and outlines alternative development strategies.The purpose of the systems design phase is to create a physical model that will satisfy all documented requirements for the system. During the systems design phase,you need to determine the(74),which programmers will use to transform the logical design into program modules and code. The deliverable for this phase is the(75),which is presented to management and users for review and approval.

A.system charter
B.system scope definition
C.system blueprint
D.system requirements document

答案:B
解析:
翻译:系统分析阶段的目的是建立新系统的逻辑模型,第一步就是进行(71),调查业务流程并记录新系统必须做哪些以满足用户需求。这一步是(72)的延续,可以使用调查结果构建业务模型,数据和流程模型以及对象模型。系统分析阶段的可交付成果是(73),它描述了管理和用户要求,成本和收益,还有可替代的方案。系统设计阶段的目的是创建一个能够满足系统所有需求文件要求的物理模型。 在系统设计阶段,需要确定(74),程序员通过系统过程模型把逻辑设计转换为程序模块和代码。该阶段的可交付成果是(75),提交给管理层和用户审查和批准。(73) A.系统章程B.系统范围定义C.系统蓝图 D.系统需求文件
参考答案:(73)B

第6题:

The basic categories of business models include().

A、brokerage

B、advertising

C、community

D、subscription


正确答案:A,B,C,D

第7题:

( )analysis emphasizes the drawing of pictorial system models to document and validate both existing and/or proposed systems.Ultimately,the system models become the( )for designing and constructing an improved system.( )is such a technique.The emphasis in this technique is process-centered.Systems analysts draw a series of process models called( )、(请作答此空)is another such technique that integrates data and process concerns into constructs called objects.

A.Structured analysis
B.Information Engineering
C.Discovery Prototyping
D.Object-Oriented analysis

答案:D
解析:
模型驱动的分析方法强调通过绘制图形化的系统模型来说明和验证已有的或待开发的系统。这些系统模型最终会成为设计和构建改进后的系统的蓝图。结构化分析就是这样一种方法,它是以过程为中心的。在结构化分析方法中,系统分析员所绘制的一系列过程模型被称为DFD。面向对象分析是另外一种模型驱动的分析方法,它将数据和过程统一到了一个被称为"对象"的结构中。

第8题:

166 In which of the following cost estimating techniques are statistics models used:

A. nonparametric cost estimating

B. parametric cost estimating

C. life cycle cost estimating

D. bottom-up estimating

E. All of the above


正确答案:B

第9题:

The purpose of the systems analysis phase is to build a logical model of the new system.The first step is(71),where you investigate business processes and document what the new system must do to satisfy users. This step continues the investigation that began during the(72). You use the fact-finding results to build business models,data and process models,and object models. The deliverable for the systems analysis phase is the(73),which describes management and user requirements,costs and benefits,and outlines alternative development strategies.The purpose of the systems design phase is to create a physical model that will satisfy all documented requirements for the system. During the systems design phase,you need to determine the(74),which programmers will use to transform the logical design into program modules and code. The deliverable for this phase is the(75),which is presented to management and users for review and approval.

A.systems planning phase
B.systems modeling phase
C.systems analysis phase
D.systems design phase

答案:A
解析:
翻译:系统分析阶段的目的是建立新系统的逻辑模型,第一步就是进行(71),调查业务流程并记录新系统必须做哪些以满足用户需求。这一步是(72)的延续,可以使用调查结果构建业务模型,数据和流程模型以及对象模型。系统分析阶段的可交付成果是(73),它描述了管理和用户要求,成本和收益,还有可替代的方案。系统设计阶段的目的是创建一个能够满足系统所有需求文件要求的物理模型。 在系统设计阶段,需要确定(74),程序员通过系统过程模型把逻辑设计转换为程序模块和代码。该阶段的可交付成果是(75),提交给管理层和用户审查和批准。(72) A.系统计划阶段B.系统建模阶段C.系统分析阶段 D.系统设计阶段
参考答案:(72)A

第10题:

Besides the( ) for process and data of current system,the deliverable from this phase also includes the formal requirements definition for the proposed system.

A.logical models
B.physical models
C.design models
D.implementation models

答案:A
解析:
除了提交现行系统的过程和数据的逻辑模型外,这一分析阶段的交付物还包括推荐系统的正式需求定义。
A.逻辑模型 B.物理模型 C.设计模型 D.执行模型

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