158.225编程代做、c++语言程序代做、Python，Java编程代做

日期：2020-10-26 10:45

MOCK EXAMINATION FOR

158.225 SYSTEMS ANALYSIS AND DESIGN

Semester 2 2017

Time allowed: THREE (3) hours

There are 50 Multiple choice Questions and 1 Written Answer Case Study

Question in 3 parts. Students are required to answer ALL questions.

All multiple choice questions are of equal value

YOU MAY NOT TAKE ANY BOOKS OR OTHER MATERIALS INTO

THE EXAM

INSTRUCTIONS FOR CANDIDATES

InspiroScan Answer Sheets

Ensure that your name and identification number are entered onto your InspiroScan

Answer Sheet.

Answers should be recorded on the InspiroScan form directly: Shade-in the entire

circle surrounding the character (A-E) that best represents your chosen answer. If

subsequent changes are required, cross through the original answer circle clearly with

an X, before selecting an alternative. Use ballpoint pen (blue or black); pencil is not

permitted. Follow all instructions carefully, otherwise InspiroScan answer sheets may

not read correctly.

SECTION A

50 Multiple choice Questions each worth 1 mark 50 Marks

(Mock exam contains only 40 MCQs; In Final Exam you will have 50)

SECTION B

1 Written Answer Case Study Question in 3 parts

Part 1 worth 15 marks

Part 2 worth 15 marks

Part 3 worth 20 marks 50 Marks

Total: 100 Marks

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SECTION A

This section contains 50 Multichoice Questions worth 50 marks in total. For

each question there is only ONE correct answer (A, B, C or D).

1. In an activity diagram, how do we differentiate between a decision and a

merge?

A They both use the same symbols but a decision only has arrows going

out and a merge only has arrows going in

B They both use the same symbols but a decision only has arrows going in

and a merge only has arrows going out

C A merge will have guard conditions, a decision will not

D Both decision and merge have guard conditions

E A decision will have guard conditions, a merge will not

2. Which of the following is NOT part of creating a requirements definition?

A Determining non-functional system requirements

B Working with the entire project team and the business users to verify,

change and prioritise identified requirements

C Determining the development methodology

D Determining functional system requirements

E Defining the scope of the system

2. In BPMN, the notation is used for:

A. decision: take one and only one outgoing branch

B. fork: take all outgoing branches

C. decision: take one or more of outgoing branches

D. join: proceed when all incoming branches have completed

E. None of the above.

3. Which of the following is a characteristic of good user-interface dialogues?

A. Minimal user support

B. Minimal feedback from the system

C. Minimal user input

D. Minimal inconsistency

E. None of the above

4. Which of the following requirements for a music download system could be

regarded as a functional requirement?

A. The system should be available for at least 99% of the time.

B. The system should enable a subscriber to download purchased music.

C. The system should be easy to maintain.

D. The system should be able to handle up to 200,000 concurrent

downloads.

E. None of the above

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5. eXtreme Programming is an example of ________ development

methodology.

A. prototyping

B. waterfall

C. structured design

D. parallel

E. agile

6. The principal issue with the Waterfall development methodology is:

A. users are only involved at the start.

B. no intermediate release of partial programs.

C. heavy dependence on documents.

D. All of the above.

E. None of these.

7. Here is a brief use case description:

The dispatcher selects a delivery route from the schedule and adds a new

delivery to the existing list of deliveries for that route. The details of the new

delivery are completed by the dispatcher.

After analysis, which of the following is NOT likely to be a candidate class

from the given use case description?

A. Schedule

B. Dispatcher

C. Route

D. Delivery

E. All of the above.

8. In a use case description, which of the following flows should only appear

once?

A. Exception flow

B. Alternate flow

C. Error flow

D. Ideal flow

E. Normal flow

9. A concept map is essentially a node-and-arc representation, where the nodes

represent the individual requirements and the arcs represent the

_______________ among the requirements.

A Relationships

B Data flow

C Constraints

D Conditions

E Communication

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10. Consider the following use case diagram for an on-line flight booking

system. What type of use case association do <<1>> and <<2>> represent?

A. <<1>> = include, <<2>> = extend

B. <<1>> = include, <<2>> = include

C. <<1>> = extend, <<2>> = include

D. <<1>> = extend, <<2>> = extend

E. None of the above

11. Consider the class diagram shown below. Which of the following

statements about the manages association is FALSE?

A. It is a one-to-many association

B. It is a reflexive association

C. It is a binary association

D. It is a uni-directional association

E. None of the above

12. Which of the following would be an appropriate way of naming a use case

for a cloud storage system?

A. Cloud storage

B. Downloading

C. Upload new document

D. Video file

E. None of the above

Change Reservation <<1>>

Look at the following activity diagram. The following 3 questions (14 - 16)

relate to this diagram

13. Which actor has the responsibility to ‘organise interviews’?

A. Main administrator

B. Problem identifier

C. 1st responder

D. Peace committee operations

E. C & D

14. Which of the following elements from the diagram is a guard condition?

A. Reject case

B. Case designation

C. Take initial notes

D. Case accepted

E. Refer case

15. Which of the following elements from the diagram is an event?

A. Organize interviews

B. Case designation

C. 1st responder

D. Case accepted

E. Refer case

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The following 2 questions (16-17) are based on the class diagram below.

16. With reference to the diagram above, what would you expect the return

type of the ‘getArtist’ method to be?

A. A WorkOfArt object

B. The name of an Artist

C. An Artist object

D. A List of Artist objects

E. None of the above

17. With reference to the diagram above, which of the following statements is

TRUE?

A. ‘WorkOfArt’ is a generalization of ‘Installation’.

B. ‘WorkOfArt’ is a specialization of ‘Painting’.

C. ‘Sculpture’ is a specialization of ‘Installation’.

D. Each ‘WorkOfArt’ is associated with one or more ‘Artists’.

E. ‘Installation’ is a specialization of ‘Sculpture’.

18. What is the purpose of adding swim lanes to an activity diagram?

A. To show which objects perform which operations.

B. To show which actors are responsible for which activities.

C. To show which activities are associated with which events.

D. To show which events are associated with which decisions.

E. To show which events are associated with which operations.

19. Which of the following is an example of a Behavioural Diagram?

A. Sequence diagram

B. Class diagram

C. Component diagram

D. Object diagram

E. None of the above

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The following 3 questions (20 - 22) are based on the diagram below.

20. Based on the diagram above, which of the following is an object of a

Boundary class?

A. Convener

B. DisbursementGUI

C. DisbursementControl

D. Case

E. C & D

21. For the same diagram, the message getPcMember() corresponds to an

operation in the class.

A. Convener

B. DisbursementGUI

C. DisbursementControl

D. Case

E. C & D

22. For the same diagram, which of the following is NOT a class?

A. Convener

B. DisbursementGUI

C. DisbursementControl

D. Case

E. A & D

23. The same operation in two different classes may be implemented using

different methods. This is known as .

A. Abstraction

B. Composition

C. Stereotyping

D. Aggregation

E. Polymorphism

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MovieCatalogue

24. Look at this part of a class diagram

* DVD

What does this tell us about the relationship between MovieCatalogue and

DVD?

A. DVD should maintain a collection of MovieCatalogue objects.

B. MovieCatalogue should have an attribute of type DVD.

C. MovieCatalogue should maintain a collection of MovieCatalogue

objects.

D. MovieCatalogue should maintain a collection of DVD objects.

E. DVD objects should maintain a collection of MovieCatalogue.

25. Systems can be ____.

A built from scratch

B purchased and customized

C outsourced to others

D all of the above

E none of the above

26. Which of the following UML diagrams is NOT used for dynamic modelling?

A. Activity diagram

B. State machine diagram

C. Class diagram

D. Sequence diagram

E. All of the above

27. Encapsulation is the mechanism that combines ____ into a single object.

A the data and attributes

B the attributes and variables

C the data and operations

D the messages and events

E the data and relationships

28. In the UML, a(n) _____________

requirement expressed as a goal.

A. Sequence diagram

B. Stereotype

C. Actor

D. State transition diagram

E. Use case

can be used to represent a user’s

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29. In the UML, which of the following characters is used to indicate that an

attribute or operation has private visibility?

30. What does the following diagram represent?

A. A decision tree

B. A decision table

C. A state table

D. A condition/response table

E. None of the above.

31. Which of the following UML diagrams is used to show how different parts of

a large application are allocated to different physical devices?

A. Communication diagram

B. Deployment diagram

C. Component diagram

D. Timing diagram

E. Class diagram

32. For good design, we aim for

A. Low coupling and low cohesion

B. High coupling and high cohesion

C. High coupling and low cohesion

D. Low coupling and high cohesion

E. None of the above is valid.

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Look at the UML class below. The following two questions (33-34) relate to

this class.

33. Which of the following statements is FALSE, when considering the Auction

class?

A. The ‘endTime’ attribute has a ‘Timestamp’ data type.

B. The attribute value for ‘durationInMinutes’ is derived.

C. The’ addSaleItem’ operation returns a ‘WorkOfArt’ object.

D. The ‘auctioneer’ attribute has a default value of ‘Bob’.

E. The ‘numberOfItems’ has integer datatype.

34. Which of the following statements is TRUE, when considering the Auction

class?

A. The ‘numberOfItems’ attribute will be a floating point number.

B. The ‘getWorksOfArtSold’ operation returns a Money object.

C. The ‘getWorksOfArtSold’ operation takes a List object as a parameter

argument.

D. The ‘getTotalRevenue’ operation returns a Money object.

E. The addSaleItem returns an item WorkOfArt.

35. According to the Law of Demeter, namely the principle of least knowledge,

messages should NOT be sent by an object to

A objects contained in attributes of itself or superclass

B an object that is passed as a parameter

C an object that is created by the method

D an object contained in an attribute of an object

E an object that is stored in a global variable

36. Which of the following relations is a composition?

A door and car

B desk and office

C employee and department

D a and b

E b and c

Auction

startTime : Timestamp

endTime : Timstamp

auctioneer : String = “Bob”

numberOfItems : Integer

/durationInMinutes : Integer

getTotalRevenue() : Money

getWorksOfArtSold() : List

addSaleItem(item : WorkOfArt)

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37. What type of diagram is this?

A message diagram

B sequence diagram

C activity diagram

D collaboration diagram

E communication diagram

38. Which of the following statement is TRUE?

A Two apartment owners can share an apartment.

B An apartment can have no owner.

C An apartment owner must own at least one apartment.

D An apartment owner cannot have more than 5 apartments.

E None of the above.

39. Any modern object-oriented approach to software development must be use

case driven, ____________, iterative and incremental.

A user-centric

B architecture-centric

C requirements-driven

D model-driven

E object-centric

40. Pools are used in BPMN to model:

A activities

B resources

C data objects

D software

E business rules

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SECTION B

This section contains 1 written answer case study question worth 50 marks, divided

into three sub questions worth 15, 20 and 15 marks respectively. You should attempt

ALL parts of the question. Your answers should be written in the blue answer book.

Case Study Description

“I Was There” is a new web-based software product being developed to allow travellers

to share their travel memories. Its main function is to enable travellers to upload their

own content and to assemble it into complete journeys for their own use and also to

share with others.

The main role of this application is for travellers, who have registered with the system,

to be able to upload, edit or remove their own travel memories. These memories can

then be used to create journeys, which are collections of memories. Registered

travellers can also specify access rights to their own travel memories and journeys,

either private, public or ‘friends only’. It is also possible for those who have not

registered to access the site. They can look at other people’s memories and journeys

that have public access, but cannot upload or edit anything. The site has a moderator

who is able to review content (for example to check for inappropriate content) and to

remove it if necessary.

Travel memories may be photos, videos or documents. All of these will have a name

and a date, and will be associated with a single location. A location includes a text

description and its GPS coordinates.

There are two types of document; stories, and reviews. These both have an author,

but only reviews have a star rating. A story may optionally link to another story that

follows on from it.

As well as a collection of travel memories, each journey contains the traveller’s own

commentary which will include the start and end dates of the journey. Deleting a

journey will not delete the travel memories within it, but the commentary will be deleted.

Case Study Questions

When answering questions 1 and 2 you should adhere to good naming

conventions and name all your model elements (for example use cases,

associations, attributes, etc.) in an appropriate way. You should clearly state

any assumptions you make.

1. Draw a use case diagram for your system from the requirements given

above.

(15 marks)

2. Draw a domain model class diagram for this system. Your diagram should

include relevant classes, associations, attributes, multiplicities, etc.

(20 marks)

3. Draw an activity diagram for a person interacting with the web based system.

(15 marks)

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