《系统分析与设计方法》期末考试题-B卷-答案

北京邮电大学2006——2007学年第2学期

《系统分析与设计方法》期末考试试题（B）答案

答题卡：1—30题

一．单重选择题：(45分)

本大题共有30小题，每小题1.5分,总分45分。每个小题的答案中只有一个是最合适的, 请你把所选择的答案在答题卡上标记出（A, B, C, D, 或E）, 其余的回答方式无效.

UML Modeling T ool

1. Which one of the following is NOT a view in Rational Rose?

https://www.360docs.net/doc/302455357.html,ponent view

B.Deployment view

https://www.360docs.net/doc/302455357.html,e case view

D.Logic view

E.Static view

2. Which one of the following UML diagrams is critical in Rational Rose forward-engineering in

order to create skeletal code?

A.Class diagram

https://www.360docs.net/doc/302455357.html,e case diagram

C.Sequence diagram

D.Collaboration diagram

E.State diagram

UML diagrams in UML 1.x

Class Diagram

3. Which one of the following statements about Class Diagram Modeling doing for a class is FALSE?

A.It helps to collect attributes in association

B.It helps to collect attributes and methods in heritance relationship

C.It helps to collect signature in method in dependency relationship

D.It helps to collect attributes and methods in dependency relationship

E.It helps to collect attributes in aggregation relationship

Object Diagram

4. Which one of the following statements about difference between Class Diagram and Object Diagram is FALSE?

A.Object Diagrams are about instant and instance

B.Object Diagrams are only used when Class Diagrams are not good enough

C.Class Diagrams are commonly used

D.Object Diagrams are used to replace the Class Diagrams

E. A Object Diagram is a scenario of a Class Diagram

State Diagram

5. Which one of the following statements about using State Diagram is FALSE?

A. A State Diagram is used for modeling all the states in a single object

B.When a class is critical and complex

C.State Diagrams should be included in any UML models

D.State Diagrams can be used in game development when a single object is critical and complex, we call

this a state-driven development method

E.State Diagrams are used by object modelers

Use Case Diagram

6. Which one of the following statements about Use Case Diagram is FALSE?

A.It is used for system functional requirements modeling

B.It is a description of a system’s behavior from a user’s standpoint

C.For syste m developers, the use case is a valuable tool: It’s a tried-and-true technique for gathering

system requiremen ts from a user’s point of view

D.Obtaining information from the user’s point of view is important if the goal is to build a system that

real people can use

E.It is commonly used for business process modeling

7. Which one of the following statements about using <> and <> in the UML use case analysis is FALSE?

A.It is to improve reusability, and to avoid reinventing the wheel

B.it is one kind of Keywords and Stereotypes application in UML

C.it can be used to avoid duplication in system development

D.it is not included in the UML 2.0 specification

E.it is one of the best “divide and conquer” technique s used in system analysis and design

8. Use Case Driven Method is NOT used in which one of the following?

A.GUI design

B.Deployment process

C.During the system design process-- use case diagram drives the sequence diagram or collaboration

diagram

D.Writing test script

E.Coding and debugging

Activity diagram

9. Which one of the following statements about using Activity Diagrams is FALSE?

A.It is realization of a use case, as you know use case diagram is commonly too rough for programme r

to do software implementation

B.It is used when it is hard to model a use case by using sequence diagram

C.It is much like the flowcharts of old. It shows steps (called, appropriately enough, activities) as well

as decision points and branches

D.It's not useful for showing what happens in an operation or method of a class

E.The great strength of Activity Diagrams lies in the fact that they support and encourage parallel

behavior. This makes them a great tool for workflow and process modeling

10. Which one of the following statements about Activity Diagram or Swimlane is FALSE?

A. One of the handier aspects of the activity diagram is its ability to expand and show who has the responsibility for each activity in a process

B.The activity diagram adds the dimension of visualizing roles. To do that, you separate the diagram into

parallel segments called swimlanes

C.Each Swimlane shows the name of a role at the top and presents the activities of each role. Transitions

can take place from one swimlane to another

D.Swimlane is useful in all occasion

E.Traditionally Activity Diagrams were usually used to describe the dynamics of what went on/within

methods. In that context they were more like traditional data flow diagrams

Interaction Diagrams--Sequence Diagram & Communication Diagram

11. Which one of the following statements about using Interaction Diagrams in the UML use case analysis is FALSE?

A. It is realization of a use case, as use case is too rough for programmer to do software implementation

B. It can be used to depict that in order to achieve a use case, how objects communicate through passing messages

C. Sequence Diagram shows the time-based dynamics of the interaction between the objects

D. It can be used in domain modeling

E. It shows how the elements of a system work together to accomplish the system's objectives -- use

case, or system requirement

12. Which one of the following is TRUE of trying to fill methods of the classes of WaterPipe according to the following Sequence Diagram?

A. sendWater() stopFlow()

B. sendWater() StopFlow() storeWater()

C. sendWater() stopFlow() sendWater()

D. stopFlow() sendWater() timeSoak()

E.

sendWater()

storeWater()

Component Diagram

13. Which one of the following statements about using Component Diagram is FALSE?

A.It is a modular part of a system

B.It's the software implementation of one or more class es, it resides in a computer

C.It's not in the mind of an analyst

D.It is about software architecture

E.It could be packaged together with use case diagram or activity diagram

Deployment Diagram

14. Which one of the following statements about Deployment Diagram is FALSE?

A.It shows the physical architecture of a computer-based system

B.It is mostly used by software engineer

C.It can depict the computers, show their connections with one another, and show the software that sits

on each machine

D.In the Deployment Diagram, each computer is represented as a cube, with interconnections between

computers drawn as lines connecting the cubes

E.It is used mostly by field engineer or system engineer

Keywords and Stereotypes

15. Which one of the following statements about using Keywords and Stereotypes is FALSE?

A. A Stereotype is an existing UML element with the addition of a Keyword in guillemets

B.It enables you to create new UML elements by basing them on existing elements

C.It's sort of like buying a suit off the rack and having it a ltered to fit your particular measurements (as

opposed to creating one out of a bolt of cloth). Think of a Stereotype as just this kind of alteration

D. The Keyword indicates that the element is used in a somewhat different way than originally intended, so we can create I nterface using the class’s icon

E. Without Keyword and Stereotypes, there will not be tons of different icons in UML, and also its extendibility isn’t endangered

UML Diagrams added in UML 2.0

Composite Structure Diagram

16. Which one of the following statements about using Composite Structure Diagram is FALSE?

A.When you're modeling a class, you might find it useful to show something about the class's internal

structure

B.This often happens if the class consists of component classes

C.Y ou put each component class inside the whole. This conveys the idea that you're looking inside the

class into its structure

D.It should be used in any UML model

E.It is useful for dissecting a class

Interaction Overview Diagram

17. Which one of the following statements about Interaction Overview Diagram is FALSE?

A.Consider once again the activity diagram, this shows you a series of steps, that is, "activities."

Suppose each of those activities involves a sequence of messages among objects. If you replaced some of the activities with sequence diagrams or communication diagrams (or a combination of the two), you'd have UML 2.0's new Interaction Overview Diagram

B.It is from UML 2.0 specification

C.One way to create Interaction Overview Diagram is to create activity diagrams first, and then replaced

each activity with sequence diagrams or communication diagram

D.One way to create Interaction Overview Diagram is to create sequence diagram first, and then

replaced some parts of the sequence diagram with activity

E.It should be used in domain modeling

The Package Diagram

18. Which one of the following statements about Package Diagram is FALSE?

A.It is to put elements that go together inside one of these tabbed folder icons. For example, if a number

of classes or components constitute a particular subsystem, they would go into a package

B.It can be used to organize related classes, use cases and so on

C.It is used to organize different subsystem

D.It is used to organize related classes and use cases together in the same package

E.It can be used to organize related components

Overview

19. Which one of the following statements about UML is FALSE?

A.After the advent of the UML, system development was often a hit-or-miss proposition.

B.The UML is a visual modeling language that can be shared among different stakeholders in software or

development. The stakeholders could be: business analyst, designer, and developers or programmers C.After the advent of the UML, a common language is shared among different roles in the software

development

D.It is same like the blueprints for building a house

E.All of the above B, C, and D are true

20. Which one of the following statements about using so many diagrams in UML modeling is FALSE?

A. A big project needs the contribution, and collaboration of different stakeholders or roles. Typically, a

system has a number of different stakeholders—people who have interests in different aspects of the system

B.The users and business analysts are more interested in business use case diagrams or use case diagrams

C.The designers are more interested in use case diagrams and sequence diagrams or communication

diagrams; and the programmers are more interested in class diagrams and sequence diagrams which are more implementation related

D.The UML diagrams make it impossible to examine a system from a number of viewpoints

E.Conscientious system design involves all the possible viewpoints, and each UML diagram gives you a

way of incorporating a particular view. The objective is to communicate clearly with every type of stakeholder.

21. Which one of the following statements about choosing UML diagrams in the design process is FALSE?

A.Not all the diagrams must appear in every UML model. Most UML models, in fact, contain a subset of

the diagrams listed by UML 2.0

B.All of the diagrams included in UML 2.0 must show up in the design process

C.Only those UML diagrams which best model the design process of the system are chosen

D.During the design process, usually the use case driven method is used

https://www.360docs.net/doc/302455357.html,e case diagrams is commonly used for system functional requirement modeling

Fitting the UML into a Development Process

22. Which one of the following is FALSE about GRAPPLE?

A.This isn't a methodology written in stone. Instead, it's a set of adaptable, flexible ideas. Think of it as a

simplified skeleton of a development process

B.GRA PPLE can work in a variety of organizations (but maybe not all). It leaves room for a creative

project manager to add his or her own ideas about what will work in a particular organization and to subtract the built-in steps that won't

C.It begins with a conceptual understanding of the domain, moves to high-level functionality, drills down

into use cases, refines models, and designs, develops, and deploys the system

D.Y ou'll also notice that more actions were in the Development segment than in the Analysis and Design

segments

E.The idea is to spend as much time as you can in up-front analysis and design so that coding proceeds

smoothly

Case studies

Discovering Business Processes

23. Which one of the following is FALSE about Discovering Business Processes?

A. If you sense part of the process becoming complicated and convoluted, consider setting off the complication as a separate business process. It will be easier to model, and the resulting model will be clearer than if you try to lump e verything together into one process

B. Swimlane might be helpful in this action

C. We should put everything together into one process --- to model every detail in just one activity diagram

D. Swimlane is chosen only if we like to emphasize which role take care of which responsibility

E. This should be happening during a JAD session

Performing a Domain Analysis

24. Which one of the following is FALSE about Performing Domain Analysis and to create Model/Domain Dictionary?

A.It is to achieve an understanding of the domain. That means you have to know the specific processes

you're trying to enhance and the nature of the world those processes operate in. In our scenario,

uncovering the business processes has jump-started the development team's knowledge

B.It is to create the domain library, and to explore the domain knowledge

C.This is to create a glossary of all the terminology in the model. It will help to maintain consistency

and avoid ambiguity

D. If you have definitions about the terminologies everyone agrees on, or if you are at least aware of the potential for confusion, you'll avoid a lot of problems down the road

E. Not all the above A, C, and D are true

25. Which one of the following is NOT a step included in the Domain Analysis?

A. Analyzing the interview

B.Developing the initial class diagram, Grouping the Classes

C.Creating and labeling associations between classes, Finding multiplicities

D.Deriving composites/Aggregate

E.Not all of the above A, B, and C are included

Gathering System Requirements

26. Which one of the following is FALSE about the System Requirements Gathering?

A. The result is a package diagram in which each package represents a major piece of functionality. Use

cases inside a package elaborate on the functionality

B. The objective of this meeting for requirement collection is to produce a package diagram that shows

all the major pieces of functionality for the system.

C. Each package will represent one piece and will contain use cases that detail what the functionality

piece is all about

D. System Requirements Collection can start with collection of the actors of the system, and then

collection of use cases for each actor

E. Not all of the above B, C and D are true

Developing the Use Cases

27. Which one of the following is FALSE about the use case analysis?

A. A use case analysis involves specifying a description of the use case, deriving the preconditions and

postconditions, and specifying the steps

B.One important aspect of the use case analysis is that the components of the system begin to emerge

C.One important aspect of the use case analysis is that you begin to reveal the components of the system

D.The use cases from the package diagram in "Gathering System Requirements," give a good picture of

what the system will have to do. The team will have to analyze and understand each one. They've moved gradually from understanding the domain to understanding the system. The use cases have provided the bridge

E.Not all of the above A, C and D are true

Getting into Interactions

28. Which one of the following is FALSE about modeling the interactions for the use cases?

A.It is a refinement or implementation of the use case

B.After the use case analysi s, a development team turns its attention to the system components the use

cases suggest. What are they? How do they interact?

C.The results of this analysis should make it easy for programmers to code the system objects and the

ways those objects communicate with one another

D.After you model interaction among components, the system is much closer to becoming a rea lity

E.As you model the interactions, you may find that it's not appropriate to modify the use cases at the

base of these interactions

Designing Look, Feel, and Deployment—GUIs, Deployment

29. Which one of the following is FALSE about GUIs design?

https://www.360docs.net/doc/302455357.html,e cases describe system usage. Therefore, the user interface has to serve as a means of

implementing the use cases

B.Graphical user interfaces (GUIs) are not directly traceable to use cases

https://www.360docs.net/doc/302455357.html,e cases drive the design of the user interface. The system has to enable the user to complete every

use case, and the user interface is the gateway into the use cases

D.Ultimately, the GUI will have to connect the to the backend code to make the system functioning

E.Graphical user interfaces (GUIs)are ultimately traceable to use cases

30. Which one of the following is FALSE about Deployment?

A. The system architecture is use case driven because system usage ultimately

determines the physical nature and layout of the system

B.Deployment is ultimately traceable to use cases

C.Deployment is the job of system engineer

D.Deployment is the job of field engineer

E.Deployment is the job of d esigner

二．分析与建模（共两小题，每题15分，总分30分）

1. To give the corresponding UML diagrams according to the brief introduction of the game of Submarine.

A. System Use case diagrams

B.Activity diagram, use swimlane if necessary

C.Sequence diagram of major use case/use case scenario

D.Class diagram

Game introduction:

This game is a simulation of the submarine’s attacking warship. The battle ground of the game is in the ocean. There are warships and submarines in the background. The submarines which are moving in left and right direction can launch torpedoes to attack the warship. The player can use the “Left key” and “Right Key” to control the warship’s left and right direction move s in order to escape the torpedoes.

NOTE: We assume the following classes already existed: Submarine, Warship, Torpedo, BattleGroundCanvas.

答案：

A.System Use case diagrams（3分）

Just one use case: ControlWarshipLeftAndRight

Actor is the player

B.Activity diagram, use swimlane if necessary（4分）

the player move the Warship in horizontal direction→if Warship hit a Torpedo→game is over

→else game continue(looping)

C.Sequence diagram of major use case/use case scenario（4分）

Actor player →Send Msg of Move() to the Warship

Warship→Send Msg of CompareLocation() to Torpedo to see if they meet

Submarine →Send Msg of fire() to Torpedo

There might be a timer update the all the components on the BattleGroundCanvas

D.Class diagram（4分）

Among the classes of Submarine, Warship, Torpedo, and BattleGroundCanvas,

BattleGroundCanvas associates with (is composed of) Submarine, Warship, and Torpedo.

Submarine associates with Torpedo.

2. To give the corresponding UML diagrams according to the brief introduction about the game of Super

Mario

A. System use case diagrams

B.General activity diagram, use the swimlane if necessary

C.Sequence diagram of major use case/use case scenario

D.Class diagram

Game introduction:

●user can use the “Up key” to control Mario’s vertical-up direction jump

●user can use the “Left key” and “Right Key” to control Mario’s left and right direction move

●user can use the “Up key” and “Ctrl Key” to control Mario’s jump to the up-level ladder

●The straight-up jumping Mario hit the ladder and knocks the Tortoise down and make it sleeping ●If a Mario who is moving in left and right direction hit a sleeping Tortoise, it will kill the Tortoise ●If a Mario hit a moving Tortoise, it will get killed

NOTE: We assume that following classes existed: Mario, Tortoise, RenderingCanvas, and Ladder.

答案：

A.System Use case diagrams（3分）

use cases:

ControlMario LeftAndRight

ControlMarioJump

Actor is the player

B.Activity diagram, use swimlane if necessary（4分）

Use case Control MarioLeftAndRight:

the player move the Mario in horizontal direction→if Mario hit a moving Tortoise→game is over

→else if Mario hit a sleeping Tortoise game, the

Tortoise is killed

Use case Control MarioJump:

the player can make the Mario jump→ if it hit the up level Ladder and a Tortoise is sitting up→

Tortoise is changing from the moving state to the sleeping

state

→else if it hit the up level Ladder and no Tortoise is sitting up→

nothing is going to happen(loop)

the player can make the Mario jump to a up level Ladder

The Activity diagram should be modeling the business process of each use case.

C.Sequence diagram of major use case/use case scenario（4分）

Use case Control MarioLeftAndRight:

Actor player →Send Msg of Move() to the Mario

Mario→Send Msg of CompareLocation() to all the Tortoises to see if Mario and the Tortoises meet

Use case Control MarioJump:

Actor player →Send Msg of jump() to the Mario

Mario →Send Msg of checkIfTortoiseOnLadder() to Ladder

Ladder→ Send Msg of sleep()to Tortoises

There might be a timer update the all the components on the RenderingCanvas

D.Class diagram（4分）

Among the classes of Mario, Tortoise, RenderingCanvas, and Ladder,

RenderingCanvas associates with Mario, Tortoise, and Ladder.

三．问答题（25分）

Tell something about what you have learnt from this System Analysis and Design course.

答案：

Use case driven development method

●System requirements→sub systems with package diagram enclosing use cases→use

cased developments→Use cases→sequence diagram/collaboration diagram (15分) ●Use case drive the UI developments (5分)

●Use case drive the system development (5分)