Deck 10: Object-Oriented Design Principles

Question 1

The interface for a component in a component diagram is denoted by a ball or a port.

Answer 1

True

Question 2

"Just in time" systems design is a popular technique used in adaptive approaches to projects.

Answer 2

True

Question 3

Detailed Object-oriented design (OOD)is done on a use case-by-use case basis.

Answer 3

True

Question 4

Which of the following is NOT one of the categories of difference between networked based systems and Internet based systems.

A)State configuration"
B)Client configuration"
C)Server configuration"
D)Connectivity configuration"

Question 5

In object-oriented design,the design models are extensions of the analysis models.

Question 6

It is usually a bad idea to try to include user-interface classes to a CRC design.

Question 7

Which analysis model serves as an input model to a design class diagram?

A)Use case diagram"
B)Activity diagram"
C)Domain model class diagram"
D)System sequence diagram (SSD)"

Question 8

The primary difference between Web based systems and non-Internet systems is in how the view layer interacts with the domain and data access layers.

Question 9

One big difference between an Internet based system and a Client/Server system is that an Internet system maintains state information.

Question 10

One tenet of Agile philosophy is that while analysis models may be useful,it generally is not necessary to develop design models.

Question 11

Ports and sockets are used to show the interface in what kind of UML diagram?

A)Deployment diagram"
B)Network diagram"
C)Package diagram"
D)Component diagram"

Question 12

Which of the following is NOT part of a multilayer object-oriented design (OOD)?

A)Database access"
B)Problem domain object"
C)User input form"
D)Functional module"

Question 13

Two layer architectures are interesting in theory,but are seldom if ever used.

Question 14

The objective of object-oriented detailed design is to identify and specify all the objects that must work together to carry out each use case.

Question 15

The objective of object-oriented analysis is to identify the objects that must work together to carry out each use case.

Question 16

The most important model in object-oriented detailed design is a class diagram.

Question 17

Developers do not typically add more classes to design class diagrams than were originally defined in the domain model.

Question 18

Which of the following diagrams is used for architectural design?

A)Interaction diagrams"
B)Package diagrams"
C)Sate machine diagrams"
D)Component diagrams"

Question 19

Software systems can generally be divided into three types of systems: single-user systems,enterprise-level systems,and Web-based systems.

Question 20

The primary difference between a design class symbol and a problem domain class symbol is the addition of method signatures.

Question 21

MVC stands for _______.

A)modules-variables-constants"
B)module-variables-connections"
C)model-view-connection"
D)model-view-controller"

Question 22

If you are doing detailed design for the use case Create New Order,which class should receive the first input?

A)OrderTransaction"
B)Order"
C)OrderHandler"
D)Customer"

Question 23

Which of the following is included in the top compartment of a design class?

A)Attributes"
B)Parameter list"
C)Type-expression"
D)Stereotype name"

Question 24

The original method used to process input data in a Web based system was by using computer programs in ______.

A)the Java programming language"
B)the .NET programming suite"
C)the C++ language for the CGI"
D)the Javascript programming language"

Question 25

A(n)____ class acts as a switchboard between the view layer and the domain layer.

A)boundary"
B)control"
C)entity"
D)persistent"

Question 26

In a design class diagram,navigation visibility is identified by ____.

A)a solid arrow between the classes, pointing to the visible class"
B)a solid arrow between the classes, initiating from the visible class"
C)a dashed arrow between the classes, pointing to the visible class"
D)a solid line between the classes"

Question 27

Which of the following is usually NOT included in a first-cut design class diagram?

A)Initial value information for attributes"
B)Attribute types"
C)Method signatures"
D)Navigation visibility arrows"

Question 28

Given two classes,customer and order,which class would probably have navigational visibility to which class?

A)Cannot determine based on the information provided"
B)Bidirectional -- each has visibility to the other"
C)Order to Customer"
D)Customer to Order"

Question 29

In Unified Modeling Language (UML)notation,a stereotype is indicated by ____.

A)parentheses"
B)brackets"
C)guillemets"
D)underline"

Question 30

UML provides a technique to extend the standard UML notation to include new symbols.This technique is called ________.

A)extending"
B)stereotyping"
C)prototyping"
D)externalizing"

Question 31

A set of public methods of a system that can be used by the outside world is referred to as ______.

A)MVC"
B)API"
C)CRC"
D)DCD"

Question 32

Which of the following is a general guideline for designing navigation visibility?

A)A superior/subordinate relationship is usually navigated from the superior to the subordinate class"
B)A superior/subordinate relationship is usually navigated from the subordinate to the superior class"
C)Relationships in which objects in one class cannot exist without objects of another class are usually navigated from the more dependent class to the more independent class"
D)Navigation arrows should not be modified during the design process"

Question 33

After completing a use-case design using CRC cards,the next step is to _______.

A)add required utility classes"
B)select another use case"
C)program the use case"
D)update the design class diagram"

Question 34

CRC stands for what?

A)Collaboration responsibility card"
B)Class responsibility collaboration"
C)class relationship collaboration"
D)collaboration relationship class"

Question 35

Which of the following is correct UML notation for an attribute in a design class?

A)visibility name:type-expression = initial-value{property}"
B)visibility class-name:type-expression {property}"
C)visibility name:initial-value(property)"
D)visibility name:type-expression initial-value (property)"

Question 36

Which of the following is valid Unified Modeling Language (UML)notation for a method signature?

A)visibility name:type-expression {parameter list}"
B)name:class-name (parameter list):type-expression"
C)visibility name(parameter list):type-expression"
D)visibility class-name:name:type-expression {parameter list}"

Question 37

In design class notation,the ____ of an attribute is enclosed in curly braces {}.

A)visibility"
B)type-expression"
C)initial-value"
D)property"

Question 38

Which two models are the primary models in object-oriented detailed design?

A)Design class diagram and component diagram"
B)Package diagram and CRC cards"
C)Sequence diagram and state machine diagram"
D)Sequence diagram and design class diagram"

Question 39

Which diagram is directly used to write programming code for object-oriented systems?

A)Sequence diagram"
B)Design class diagram"
C)Package diagram"
D)State-machine diagram"

Question 40

An input window class is an example of a(n)____ design class type.

A)boundary"
B)control"
C)entity"
D)persistent"

Question 41

A(n)_______ class is one where its objects exist after the system is turned off.

Question 42

High coupling ____ in a system.

A)is easier to maintain"
B)reduces ripple effects in a system when changes occur"
C)adds complexity"
D)decreases visibility between classes"

Question 43

Which of the following are two primary methods used to design and implement enterprise-level systems. (choose two)

A)Client-server networked systems"
B)Client-server stand alone systems"
C)Internet systems"
D)Desktop systems"
E)Mobile app systems
F)Open-source systems"

Question 44

Which of the following are information items on CRC cards. (Choose two)

A)Object names"
B)Method signatures"
C)Attributes"
D)Stereotypes"
E)Interactions"
F)Responsibilities

Question 45

What is the name of the diagram that is an implementation diagram which shows the overall system architecture and the logical components within it?

Question 46

When a system has shared resources among multiple people or groups it is called a(n)_______.

Question 47

CGI stands for _______.

Question 48

A(n)____________________ class is a class that is used to retrieve data from a database.

Question 49

The term used to identify an attribute that contains the same value for all objects of this type in the system is _______.

Question 50

The main purpose of a(n)____________________ diagram is to document and describe the programming classes that will be built for the new system.

Question 51

A class that is responsible for accessing both the Internet and a database has ____ cohesion.

A)very low"
B)low"
C)medium"
D)high"

Question 52

The creation of a programming object based on the template provided by the class definition is called _______.

Question 53

Which of the following is true of class-level methods?

A)They depend on the existence of a particular object."
B)They cannot access data across all objects."
C)They are executed by the class instead of a specific object of the class."
D)There can only be one class method per class."

Question 54

What is the term used to define the characteristic of an object attribute that describes whether it can be directly accessed by another object -- denoted by + or - ?

Question 55

What do we call the notation that shows all the information required to call or invoke a method?

Question 56

When a system is built with public methods that other systems can use to access its functionality,that is called the system's _______.

Question 57

____ is a qualitative measure of the consistency of functions within a single class.

A)Cohesion"
B)Encapsulation"
C)Coupling"
D)Visibility"

Question 58

What is the term to denote a method that is invoked on a class instead of on an object?

Question 59

A class named SaleItem which has methods to calculate its own price is said to have good ______.

A)API"
B)cohesion"
C)coupling"
D)object responsibility"

Question 60

Which of the following is the best coupling choice for an input window,domain,and database object in a system?

A)The input window is coupled to both the domain and database objects."
B)The input window is coupled to the domain and the domain is coupled to the database."
C)The input window and the domain are both coupled to the database object."
D)All objects are coupled to each other."

Question 61

A brainstorming technique for designing interactions in use cases by assigning responsibilities and collaborations for classes is called _______ .

Question 62

The term "_______" is a measure of the focus or unity of purpose within a single class.

Question 63

Describe the three major differences between a client/server system and an Internet based system.

Question 64

What is the term that is used to describe a design principle in which parts of a system that are unlikely to change are segregated from those that will?

Question 65

What term is used to describe a design principle in which an intermediate class is placed between two classes to decouple them but still link them?

Question 66

A class that can never have objects of its type created is called a(n)_______.

Question 67

A class that can be instantiated with objects of its type being created is called a(n)______.

Question 68

The term "_______" is a design principle in which one object has reference to another object and can thus interact with it.

Question 69

Describe the object-oriented detailed design steps.

Question 70

A design principle in which objects are responsible for carrying out system processing is called ______.

Question 71

Describe the process to do use case realization with CRC cards.

Question 72

List five important UML design models,and describe their use.