Question 1

​One type of design class stereotype is called a "concrete class" because it can be instantiated.

Accepted Answer

False

Question 2

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

Accepted Answer

In object-oriented design, the analysis models are refined and expanded upon to create design models. Therefore, the design models are indeed extensions of the analysis models.

Question 3

​A "persistent" class is sometimes referred to as an "entity" class.

Accepted Answer

This is true, as a persistent class in object-oriented programming is one that can be saved and retrieved from a database, and is often referred to as an "entity" in the context of a database.

Question 4

An object-oriented program consists of a set of object classes that work together to process an input message.

Accepted Answer

The answer of An object-oriented program consists of a set...

Question 5

​The only difference between a domain class diagram and a design class diagram is the addition of the methods.

Accepted Answer

The domain class diagram represents the conceptual model of the system and includes only class names and their relationships. The design class diagram, on the other hand, includes additional details such as class attributes, methods, and implementation details.

Question 6

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

Accepted Answer

This statement is false. Agile methodology emphasizes continuous design and encourages the creation of design models to maintain a shared understanding of the project's goals and development path.

Question 7

​Visibility is a design property that indicates whether a class can be "seen" by the user interface classes.

Accepted Answer

Visibility in the context of software design refers to the ability of a class to be accessed by other classes, not specifically whether it can be "seen" by user interface classes. It's more about access control within the code.

Question 8

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

Accepted Answer

Detailed Object-oriented design (OOD) is usually done on a use-case-by-use-case basis, where each use case is analyzed and designed separately to capture all the necessary requirements and functionalities for that particular scenario. This approach helps to ensure a more modular and scalable design while also promoting better software quality and maintainability.

Question 9

​The first step in object-oriented design is to develop the design class diagram.

Accepted Answer

The first step in object-oriented design is typically to identify the system's objects and their interactions, often through use case analysis or requirements gathering, before developing the design class diagram.

Question 10

One popular standard UML model that is used for object-oriented design is through the use of CRC Cards.

Accepted Answer

CRC Cards are not a standard UML model. They are a technique used for object-oriented design that is independent of UML.

Question 11

​Both a communication diagram and a sequence diagram have the same purpose and provide basically the same information.

Accepted Answer

Both diagrams are UML (Unified Modeling Language) tools used for modeling the dynamic aspects of systems, specifically focusing on the interaction between objects. They both represent the flow of messages between objects but do so in different formats: sequence diagrams emphasize the time sequence of messages, while communication diagrams emphasize the relationships between objects. Despite their different presentations, their core purpose and the information they provide are fundamentally the same.

Question 12

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

Accepted Answer

Object-oriented design involves identifying and specifying the classes and messages necessary to carry out each use case. This is accomplished through various techniques such as class diagrams, sequence diagrams, and collaboration diagrams.

Question 13

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

Accepted Answer

The answer of ​It is usually a bad idea to...

Question 14

The primary difference between the first-cut design class diagram and the final design class diagram is the addition of method signatures.

Accepted Answer

The first-cut design class diagram may have the names of the methods, but not their signatures (parameters and return values). The final design class diagram includes the method signatures for each class method.

Question 15

​Attributes within a property class can have their own properties.

Accepted Answer

This is true. In object-oriented programming, properties (also known as attributes or fields) can have their own properties or characteristics, such as their data type, accessibility, and default value.

Question 16

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

Accepted Answer

The answer of The objective of object-oriented analysis is to...

Question 17

​In the design of a complex use case,both a communication diagram and a sequence diagram may be needed.

Accepted Answer

The answer of ​In the design of a complex use...

Question 18

​The design models that are useful for modeling the flow of execution are Communication diagrams,Sequence diagrams,and Activity diagrams.

Accepted Answer

The answer of ​The design models that are useful for...

Question 19

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

Accepted Answer

A design class symbol includes method signatures, while a problem domain class symbol does not necessarily include them.

Question 20

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

Accepted Answer

Developers often add more classes to design class diagrams than were originally defined in the domain model to accommodate design considerations, implementation details, and software architecture requirements that were not apparent during the initial domain modeling phase.

Quiz 12: Object-Oriented Design: Fundamentals

​One type of design class stereotype is called a "concrete class" because it can be instantiated.

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

​A "persistent" class is sometimes referred to as an "entity" class.

An object-oriented program consists of a set of object classes that work together to process an input message.

​The only difference between a domain class diagram and a design class diagram is the addition of the methods.

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

​Visibility is a design property that indicates whether a class can be "seen" by the user interface classes.

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

​The first step in object-oriented design is to develop the design class diagram.

One popular standard UML model that is used for object-oriented design is through the use of CRC Cards.

​Both a communication diagram and a sequence diagram have the same purpose and provide basically the same information.

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

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

The primary difference between the first-cut design class diagram and the final design class diagram is the addition of method signatures.

​Attributes within a property class can have their own properties.

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

​In the design of a complex use case,both a communication diagram and a sequence diagram may be needed.

​The design models that are useful for modeling the flow of execution are Communication diagrams,Sequence diagrams,and Activity diagrams.

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

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

One type of design class stereotype is called a "concrete class" because it can be instantiated.

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

A "persistent" class is sometimes referred to as an "entity" class.

The only difference between a domain class diagram and a design class diagram is the addition of the methods.

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

Visibility is a design property that indicates whether a class can be "seen" by the user interface classes.

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

The first step in object-oriented design is to develop the design class diagram.

Both a communication diagram and a sequence diagram have the same purpose and provide basically the same information.

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

Attributes within a property class can have their own properties.

In the design of a complex use case,both a communication diagram and a sequence diagram may be needed.

The design models that are useful for modeling the flow of execution are Communication diagrams,Sequence diagrams,and Activity diagrams.

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

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