Deck 11: Use Case Realizations

Question 1

The first-cut DCD includes method signatures.

Answer 1

False

Question 2

The perfect solution assumption means that we do not worry about exception conditions.

Answer 2

True

Question 3

The perfect technology assumption means not to worry about issues such as user security.

Answer 3

True

Question 4

There are two preferred methods to accessing the database.One is to have newly instantiated object call the data access object.The other is to let the controller access the data access object.

Question 5

The starting point for the detailed design of a use case is always the SSD.

Question 6

A loop or repeating message or messages in a sequence diagram is depicted by a rectangle box.

Question 7

Dependency relationships cannot exist between classes within packages.

Question 8

The first-cut sequence diagram contains view layer and business layer.

Question 9

The code "if (someObject == null)" is part of the factory pattern.

Question 10

The perfect memory assumption means that there is always adequate memory to execute the program.

Question 11

The controller object is usually part of view layer.

Question 12

Since updating a design class diagram is done after the use case realization is complete,visibility information is no longer necessary.

Question 13

Separation of responsibilities is a design principle which dictates that reading a database should not be done in a problem domain class.

Question 14

Design class diagrams and interaction diagrams should be developed independent of each other.

Question 15

The activation lifeline is depicted by a vertical dashed line under an object.

Question 16

What is the least cohesive approach in creating use case controllers in a system?

A)Define a single controller for all use cases."
B)Define several controllers, each with a specific set of responsibilities"
C)Create a single controller for a single subsystem"
D)Create one controller per use case"

Question 17

System designers frequently create a class called a ____ that can serve as a collection point for incoming messages.

A)switchboard"
B)message controller"
C)use case controller"
D)message collector"

Question 18

Adding a use case controller to a sequence diagram is an example of applying a design pattern.

Question 19

The realization of a use case-determining what objects collaborate by sending messages to each other to carry out the use case-is done through the development of a(n)____ diagram.

A)system sequence"
B)package"
C)interaction"
D)design class"

Question 20

The best technique for accessing the database when multiple objects are needed is just to let the data access object instantiate objects.

Question 21

Which of the following symbols is used in a communication diagram,but not in a sequence diagram?

A)Message arrow"
B)Object"
C)Activation lifeline"
D)Link"

Question 22

Which of the following is an example of an interaction diagram?

A)Design class diagram"
B)Data access diagram"
C)Package diagram"
D)Communication diagram"

Question 23

What is the first step in constructing a first-cut sequence diagram from the elements of the system sequence diagram (SSD)?

A)Determine which messages must be sent"
B)Create a use case controller"
C)Replace the :System object with all the objects that must collaborate"
D)Select an input message from the use case"

Question 24

Communication diagrams indicates the order of the messages with ____.

A)sequence numbers"
B)activation lifelines"
C)arrows"
D)links"

Question 25

The perfect technology assumption implies that _______.

A)the equipment will work without any problems"
B)the users understand the technology"
C)issues related to technology are ignored"
D)issues related to scalability (high volumes) are ignored"

Question 26

The primary models used for OO detailed design are ____ diagrams.

A)design class and statechart"
B)package and statechart"
C)package and deployment"
D)design class and interaction"

Question 27

Which of the following is NOT a component of the design pattern template?

A)Problem that requires a solution"
B)Example of the pattern"
C)Description of when the pattern does not apply"
D)Consequences of the pattern"

Question 28

When denoting a specific object in a sequence diagram,a ____ serves as the divider between the object name and the specific object identifier.

A)double colon"
B)colon"
C)dash"
D)dot"

Question 29

Which of the following is NOT a valid technique to return data from an input message?

A)A return object name"
B)A return message"
C)A return value on an input message"
D)A return condition name"

Question 30

When a message is sent from an originating object to a destination object it means that ______.

A)data is being passed from the origin object to the destination object"
B)a transition is occurring between the objects"
C)a method is being invoked on the originating object"
D)a method is being invoked on the destination object"

Question 31

The following notation "anOrd:Order" can be interpreted as follows:

A)Order is a class.anOrd is the identifier of an object in the class"
B)Order is an object.anOrd is the identifier for that order"
C)Order is a class.anOrd is an object in that class"
D)Order is an object.anOrd is the reference to that object"

Question 32

User interface objects in a sequence diagram often are labeled with the stereotype ____.

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

Question 33

Which is the correct notation for a message label on a sequence diagram?

A)* [true/false]RetVal := name (param)"
B)[true/false]RetVal == name (param)"
C)[true/false]seq# RetVal := name (param)"
D)* [true/false] seq# Retval := name (param)"

Question 34

____ methods must be included in a design class diagram.

A)Constructor"
B)Use case specific"
C)Getter"
D)Setter"

Question 35

When a use case controller receives the initial request for an inquiry when the data access layer is added,it first ____.

A)begins the process to initialize the necessary objects in memory"
B)sends a message to the database to see if it is available"
C)sends a message to the appropriate data access object to retrieve the data"
D)sends a return message to the view layer"

Question 36

The final step in the object-oriented design (OOD)process consists of developing the ____.

A)attributes of the design classes"
B)method names of the design classes"
C)interaction diagrams"
D)package diagrams"

Question 37

Developing a(n)____ diagram is a multistep process of determining which objects work together and how they work together.

A)design class"
B)interaction"
C)state machine"
D)package"

Question 38

In a sequence when one assumes that the objects are already available to receive messages,that is considered to be the _______.

A)perfect technology assumption"
B)perfect memory assumption"
C)perfect solution assumption"
D)perfect design assumption"

Question 39

____ diagrams partition a design class diagram into related functions.

A)Statechart"
B)Sequence"
C)Interaction"
D)Package"

Question 40

Which design model provides information for a design class diagram?

A)Deployment diagram"
B)Interaction diagram"
C)Statechart diagram"
D)Package diagram"

Question 41

Data access layer classes should ____.

A)process all business rules with appropriate logic"
B)accept input data"
C)display data fields"
D)contain Structure Query Language (SQL) statements"

Question 42

A type of interaction diagram that emphasizes the order of the messages between objects for a specific use case is called a(n)________ diagram.

Question 43

______________________________ is a design principle in which analysts divide or segregate classes into several highly cohesive classes.

Question 44

The customer relationship system needs to instantiate a new customer object.How should this be done?

A)Let the factory object do it."
B)Let the view layer object do it."
C)Let the controller object do it."
D)Let another business object do it."

Question 45

Domain layer classes should ____.

A)prepare persistent classes for storage to the database"
B)start up and shut down the system"
C)edit and validate input data"
D)establish and maintain connections to the database"

Question 46

A type of interaction diagram that does not have activation lifelines is called a ____________ diagram.

Question 47

View layer classes should do all of the following EXCEPT _______.

A)capture clicks and data entry"
B)start and shut down the system"
C)create problem domain classes"
D)display forms"

Question 48

Problem domain classes that must be remember between program execution are called ______ classes.

Question 49

The _________________ pattern is a based on a class that helps to decouple the view layer from the business logic layer by receiving all input messages.

Question 50

A different implementation of a function is required in an existing system.The best way to integrate this function into the system is ______

A)to write the code in a new class"
B)to write the code in an existing class"
C)with the factory pattern"
D)with the adapter pattern"

Question 51

Use case ____________________ is the process of detail design for a particular use case by elaborating the messages that are necessary to execute the use case.

Question 52

In a communication diagram,a(n)____________________ is used to show that two items share a message.

Question 53

The ___________________ sequence diagram only contains problem domain objects.

Question 54

Given the following code,identify the pattern.
Class MyBuilder
{ static MyBuilder builder = null;
{ if builder == null {builder = new MyBuilder( );
Return builder;
}

A)Factory Pattern"
B)Singleton Pattern"
C)Factory Method Pattern"
D)Adapter Pattern"

Question 55

A dashed arrow represents a(n)_______ relationship in a package diagram.

Question 56

Standard design techniques and templates that are recognized as good practice are called _________________.

Question 57

The ________________ DCD usually contains no method signatures,but does contain navigation visibility.

Question 58

A type of interaction diagram that emphasizes the objects that send and receive messages for a specific use case is called a(n)_______ diagram.

Question 59

A representation of a period during which a method of an object is alive and executing is called its _______.

Question 60

A labeled arrow between lifelines on a sequence diagram is called a(n)_______________.

Question 61

A type of diagram that is used to define groups of classes as a subsystem is called a _______________ diagram.

Question 62

What considerations should be taken into account when choosing the type of interaction diagram for a system design model?

Question 63

Describe the three basic guideline steps for creating the messages in the first cut sequence diagram.

Question 64

The _______________ pattern is used to instantiate objects as a service.

Question 65

The _____________ pattern can be used to connect two disparate systems.

Question 66

How has the differences between programming languages and database languages driven the trend to a multilayer design?

Question 67

The _____________ layer contains the user interface classes.

Question 68

List and briefly describe the five parts included in the description of a design pattern.

Question 69

A pattern that ensures that it only instantiates itself one time is called the _____________ pattern.

Question 70

_________________________ are relationships among elements that indicate which elements affect other elements in a system.