Question 1

An operation that applies to a class rather than an object instance is a(n):
A) constructor operation.
B) query operation.
C) class-scope operation.
D) update operation.

Accepted Answer

A class-scope operation applies to the class as a whole and does not depend on any specific object instance. Constructors and update operations are instance-specific, and query operations retrieve information about specific object instances.

Question 2

Which of the following is a reason for using an object-oriented design?
A) The analysis model is not formal enough to be implemented in a programming language.
B) The actual system must be adapted to the environment in which the system will actually be implemented.
C) The analysis results can be validated using object-oriented design.
D) All of the above.

Accepted Answer

A) Object-oriented design allows for the analysis model to be transformed into a programming language with greater ease.
B) Object-oriented design allows for flexibility and adaptability to different environments.
C) Object-oriented design can provide a tangible representation of the analysis results through the creation of classes, objects, and methods.

Therefore, all of the options given are valid reasons for using object-oriented design.

Question 3

Which of the following is a function or service provided by all instances of a class?
A) operation
B) implementation
C) class group
D) query

Accepted Answer

An operation is a function or service provided by all instances of a class.

Question 4

In the figure below,which of the following is true?

A) Students use various software tools for different courses.
B) Students can only register for one course.
C) Students use only one type of software.
D) Each course uses specific software.

Accepted Answer

The answer of In the figure below,which of the following...

Question 5

All of the following are benefits of object-oriented modeling EXCEPT:
A) the ability to tackle more challenging problem domains.
B) increased consistency among analysis, design, and programming activities.
C) decreased communication among the users, analysts, designers, and programmers.
D) reusability of analysis, design, and programming results.

Accepted Answer

Object-oriented modeling actually increases communication among the users, analysts, designers, and programmers. Therefore, decreased communication is not a benefit. The other options are all benefits of object-oriented modeling.

Question 6

A graph of instances that are compatible within a class diagram is called a(n):
A) object group.
B) method chart.
C) object diagram.
D) ERD.

Accepted Answer

A graph that shows instances and their relationships within a class diagram is called an object diagram. The other options do not accurately describe this type of diagram.

Question 7

A diagram that shows the static structure of an object-oriented model is called a(n):
A) structure diagram.
B) class diagram.
C) entity diagram.
D) none of the above.

Accepted Answer

A class diagram is a diagram that shows the structure of an object-oriented model, including classes, their attributes, methods, and the relationships between them. This diagram is used in the early stages of software development to visualize the structure of a system and to aid in the design process. A structure diagram is a more general term that can refer to any diagram that shows the structure of a system, whereas an entity diagram is typically used in database design to show the relationships between tables. None of these options fully describe a static object-oriented model.

Question 8

________ is the technique of hiding the internal implementation details of an object from its external view.
A) Grouping
B) Encapsulation
C) Classification
D) Mining

Accepted Answer

Encapsulation is the technique used to hide the internal implementation details of an object from its external view. This is done by bundling the data and the methods that operate on that data into a single unit. This helps to protect the data from accidental or intentional misuse and also provides a well-defined interface for interacting with the object.

Question 9

An association ________ is an association that has attributes or operations of its own.
A) link
B) group
C) class
D) body

Accepted Answer

In object-oriented programming, a class is a blueprint for creating objects. An association class is a class that is used to represent an association relationship between two or more classes. It has its own attributes and operations that are specific to the association.

Question 10

The end of an association where it connects to a class is called a(n):
A) connector.
B) terminator.
C) initiator.
D) association role.

Accepted Answer

The answer of The end of an association where it...

Question 11

Which type of operation has side effects?
A) Update
B) Append
C) Query
D) Scope

Accepted Answer

An update operation changes the state of the data, which can have side effects on other parts of the system. Append and query operations do not change the state of the data, so they do not have side effects. Scope is not an operation, but rather a concept in programming languages.

Question 12

Which of the following refers to a set of objects that share common structures and behaviors?
A) Supertype
B) Object class
C) Model
D) Entity group

Accepted Answer

An object class is a set of objects that share common structures and behaviors. A supertype refers to a generalization of multiple object classes, a model is a representation of a system, and an entity group is not a commonly used term in object-oriented programming.

Question 13

An operation that creates a new instance of a class is called a(n):
A) query operation.
B) update operation.
C) scope operation.
D) constructor operation.

Accepted Answer

A constructor operation creates a new instance of a class by initializing its instance variables and allocating memory. Query and update operations are used to retrieve and modify the state of an existing object, while scope operations pertain to the visibility and accessibility of variables within a program.

Question 14

A(n)________ is a concept,abstraction,or thing that has a state,behavior,and identity.
A) relationship
B) attribute
C) key
D) object

Accepted Answer

An object is a concept or thing that has a state, behavior, and identity. It is the basic unit of object-oriented programming and is characterized by encapsulation, inheritance, and polymorphism. Relationships, attributes, and keys are all related concepts but are not equivalent to an object.

Question 15

A(n)________ encompasses an object's properties and the values of those properties.
A) state
B) attribute
C) method
D) behavior

Accepted Answer

The answer of A(n)________ encompasses an object's properties and the...

Question 16

The Unified Modeling Language:
A) is a notation useful for graphically depicting an object-oriented analysis or design model.
B) allows one to capture design decisions of a system.
C) promotes communication among key personnel involved in development.
D) all of the above.

Accepted Answer

The Unified Modeling Language (UML) is a notation that is useful for graphically depicting an object-oriented analysis or design model, allowing one to capture design decisions of a system, and promoting communication among key personnel involved in development. Therefore, all of the above options are correct.

Question 17

Which of the following operations does not alter the state of an object?
A) Update
B) Query
C) Constructor
D) None of the above

Accepted Answer

A query operation only retrieves information from an object, it does not modify or alter its state. The other options involve updating or creating an object.

Question 18

In the figure below,which of the following is true?

A) A faculty may advise only one student.
B) A faculty may advise up to a maximum of 10 students.
C) A course offering may be offered for multiple courses.
D) A student can have more than one advisor.

Accepted Answer

The answer of In the figure below,which of the following...

Question 19

________ indicates how many objects participate in a given relationship.
A) Bound
B) Multiplicity
C) Role
D) Relationship

Accepted Answer

Multiplicity in UML diagrams indicates the cardinality or number of objects participating in a relationship. It can be one-to-one, one-to-many, many-to-one, or many-to-many. Bound refers to the upper and lower limits of a variable, Role refers to the behavior and responsibilities of an object, and Relationship refers to the connection between two objects.

Question 20

A(n)________ is shown as a solid line between the participating classes.
A) connector
B) update
C) entity
D) association

Accepted Answer

An association is shown as a solid line between the participating classes in a UML class diagram. This represents a relationship between the classes. Options A, B, and C are not correct as connector, update, and entity do not specifically refer to the lines representing relationships between classes.

Quiz 13: Object-Oriented Data Modeling

An operation that applies to a class rather than an object instance is a(n) :

Which of the following is a reason for using an object-oriented design?

Which of the following is a function or service provided by all instances of a class?

In the figure below,which of the following is true?

All of the following are benefits of object-oriented modeling EXCEPT:

A graph of instances that are compatible within a class diagram is called a(n) :

A diagram that shows the static structure of an object-oriented model is called a(n) :

________ is the technique of hiding the internal implementation details of an object from its external view.

An association ________ is an association that has attributes or operations of its own.

The end of an association where it connects to a class is called a(n) :

Which type of operation has side effects?

Which of the following refers to a set of objects that share common structures and behaviors?

An operation that creates a new instance of a class is called a(n) :

A(n) ________ is a concept,abstraction,or thing that has a state,behavior,and identity.

A(n) ________ encompasses an object's properties and the values of those properties.

The Unified Modeling Language:

Which of the following operations does not alter the state of an object?

In the figure below,which of the following is true?

________ indicates how many objects participate in a given relationship.

A(n) ________ is shown as a solid line between the participating classes.