Question 1

When an object of a derived class is instantiated, the __________ constructor initializes the _________ members.

Accepted Answer

A)  Base class, base class. 
B)  Derived class, base class. 
C)  Base class, derived class. 
D)  Derived class, public. 
A)  Base class, base class. 
B)  Derived class, base class. 
C)  Base class, derived class. 
D)  Derived class, public. A

Question 2

Protected base class members cannot be accessed by:

Accepted Answer

A)  Functions that are neither friends of the base class, derived-class member functions nor friends of a derived class. 
B)  friends of the base class. 
C)  Functions that are not derived-class member functions. 
D)  friends of derived classes. 
A)  Functions that are neither friends of the base class, derived-class member functions nor friends of a derived class. 
B)  friends of the base class. 
C)  Functions that are not derived-class member functions. 
D)  friends of derived classes. A

Question 3

Assuming the definition, class BasePlusCommissionEmployee : public CommissionEmployee
Which of the following is false?

Accepted Answer

A)  The colon (:) in the header of the class definition indicates inheritance. 
B)  The keyword public indicates the type of inheritance. 
C)  All the public and protected members of class BasePlusCommissionEmployee are inherited as public and protected members, respectively, into class CommissionEmployee. 
D)  CommissionEmployee is the base class and BasePlusCommissionEmployee is the derived class. 
A)  The colon (:) in the header of the class definition indicates inheritance. 
B)  The keyword public indicates the type of inheritance. 
C)  All the public and protected members of class BasePlusCommissionEmployee are inherited as public and protected members, respectively, into class CommissionEmployee. 
D)  CommissionEmployee is the base class and BasePlusCommissionEmployee is the derived class. C

Question 4

Which of the following is not one of the disadvantages of using the "copy-and-paste" approach to duplicating code from one class into another class?

Accepted Answer

A)  Errors are prone to be spread around. 
B)  It is time consuming. 
C)  It forces the system to store many physical copies of the code, creating a code-maintenance nightmare. 
D)  All of the above are disadvantages of the "copy-and-paste" approach. 
A)  Errors are prone to be spread around. 
B)  It is time consuming. 
C)  It forces the system to store many physical copies of the code, creating a code-maintenance nightmare. 
D)  All of the above are disadvantages of the "copy-and-paste" approach.

Question 5

Which of the following is most likely a base class of the other three?

Accepted Answer

A)  automobile. 
B)  convertible. 
C)  miniVan. 
D)  sedan. 
A)  automobile. 
B)  convertible. 
C)  miniVan. 
D)  sedan.

Question 6

Which of the following is not a kind of inheritance in C++?

Accepted Answer

A)  public. 
B)  private. 
C)  static. 
D)  protected. 
A)  public. 
B)  private. 
C)  static. 
D)  protected.

Question 7

When deriving a class from a protected base class, the public members of the base class become _________ and the protected members of the base class become __________?

Accepted Answer

A)  protected, private 
B)  public, private 
C)  protected, protected 
D)  public, protected 
A)  protected, private 
B)  public, private 
C)  protected, protected 
D)  public, protected

Question 8

Which of the following statements about inheriting base class constructors is false?

Accepted Answer

A)  To inherit a base class's constructors, you write the following line of code in the derived class definition (BaseClass is the base class's name):
Using BaseClass::BaseClass; 
B)  If an inherited base-class constructor has default arguments, the line of code in Part (a) causes the compiler to generate a derived-class constructor with the same default arguments. 
C)  By default, each inherited constructor has the same access level (public, protected or private) as its corresponding base-class constructor. 
D)  If the derived class does not explicitly define constructors, the compiler generates a default constructor in the derived class-even if it inherits other constructors from its base class. 
A)  To inherit a base class's constructors, you write the following line of code in the derived class definition (BaseClass is the base class's name):
Using BaseClass::BaseClass; 
B)  If an inherited base-class constructor has default arguments, the line of code in Part (a) causes the compiler to generate a derived-class constructor with the same default arguments. 
C)  By default, each inherited constructor has the same access level (public, protected or private) as its corresponding base-class constructor. 
D)  If the derived class does not explicitly define constructors, the compiler generates a default constructor in the derived class-even if it inherits other constructors from its base class.

Question 9

Select the false statement regarding inheritance.

Accepted Answer

A)  A derived class can contain more attributes and behaviors than its base class. 
B)  A derived class can be the base class for other derived classes. 
C)  Some derived classes can have multiple base classes. 
D)  Base classes are usually more specific than derived classes. 
A)  A derived class can contain more attributes and behaviors than its base class. 
B)  A derived class can be the base class for other derived classes. 
C)  Some derived classes can have multiple base classes. 
D)  Base classes are usually more specific than derived classes.

Question 10

When should base class members be declared protected?

Accepted Answer

A)  When all clients should be able to access these members. 
B)  When these members are used only by member functions of this base class. 
C)  When these members should be available only to derived classes (and friends), but not to other clients. 
D)  The protected access specified should never be used. 
A)  When all clients should be able to access these members. 
B)  When these members are used only by member functions of this base class. 
C)  When these members should be available only to derived classes (and friends), but not to other clients. 
D)  The protected access specified should never be used.

Question 11

The is-a relationship represents.

Accepted Answer

A)  Composition. 
B)  Inheritance. 
C)  Information Hiding. 
D)  A friend. 
A)  Composition. 
B)  Inheritance. 
C)  Information Hiding. 
D)  A friend.

Question 12

Which forms of inheritance are is-a relationships?

Accepted Answer

A)  All forms of inheritance are is-a relationships. 
B)  Only public and private. 
C)  Only public and protected. 
D)  Only public. 
A)  All forms of inheritance are is-a relationships. 
B)  Only public and private. 
C)  Only public and protected. 
D)  Only public.

Question 13

Base class constructors and assignment operators:

Accepted Answer

A)  Are not inherited by derived classes. 
B)  Should not be called by derived class constructors and assignment operators. 
C)  Can be inherited by derived classes, but generally are not. 
D)  Can call derived-class constructors and assignment operators. 
A)  Are not inherited by derived classes. 
B)  Should not be called by derived class constructors and assignment operators. 
C)  Can be inherited by derived classes, but generally are not. 
D)  Can call derived-class constructors and assignment operators.

Question 14

To declare class subClass a privately derived class of superClass one would write:

Accepted Answer

A) class subclass : private superClass B) class subclass :: private superClass C) class subclass D) class subclass inherits private superClass A) class subclass : private superClass B) class subclass :: private superClass C) class subclass D) class subclass inherits private superClass

Question 15

From most restrictive to least restrictive, the access modifiers are:

Accepted Answer

A)  protected, private, public 
B)  private, protected, public 
C)  private, public, protected 
D)  protected, public, private 
A)  protected, private, public 
B)  private, protected, public 
C)  private, public, protected 
D)  protected, public, private

Question 16

Which of the following is not a good example of a hierarchy likely to be modeled by inheritance?

Accepted Answer

A)  Airplanes. 
B)  Geometric shapes. 
C)  Animals. 
D)  Prime numbers. 
A)  Airplanes. 
B)  Geometric shapes. 
C)  Animals. 
D)  Prime numbers.

Question 17

Assuming the following is the beginning of the constructor definition for class BasePlus-CommissionEmployee which inherits from class Point: BasePlusCommissionEmployee::BasePlusCommissionEmployee(string first,
String last, string ssn, double sales, double rate, double salary)
: CommissionEmployee(first, last, ssn, sales, rate)
The line beginning with a colon(:)

Accepted Answer

A)  Invokes the CommissionEmployee constructor with arguments. 
B)  Causes a compiler error. 
C)  Is unnecessary because the CommissionEmployee constructor is called automatically. 
D)  Indicates inheritance. 
A)  Invokes the CommissionEmployee constructor with arguments. 
B)  Causes a compiler error. 
C)  Is unnecessary because the CommissionEmployee constructor is called automatically. 
D)  Indicates inheritance.

When an object of a derived class is instantiated, the __ constructor initializes the _ members.

Protected base class members cannot be accessed by:

Assuming the definition, class BasePlusCommissionEmployee : public CommissionEmployee Which of the following is false?

Which of the following is not one of the disadvantages of using the "copy-and-paste" approach to duplicating code from one class into another class?

Which of the following is most likely a base class of the other three?

Which of the following is not a kind of inheritance in C++?

When deriving a class from a protected base class, the public members of the base class become _ and the protected members of the base class become __?

Which of the following statements about inheriting base class constructors is false?

Select the false statement regarding inheritance.

When should base class members be declared protected?

The is-a relationship represents.

Which forms of inheritance are is-a relationships?

Base class constructors and assignment operators:

To declare class subClass a privately derived class of superClass one would write:

From most restrictive to least restrictive, the access modifiers are:

Which of the following is not a good example of a hierarchy likely to be modeled by inheritance?

Introduction to Computers and C++

Introduction to C Programming; Inputoutput and Operators

Introduction to Classes, Objects and Strings

Control Statements, Assignment, and Operators

Control Statements, Logical Operators

Functions and an Introduction to Recursion

Class Templates Array and Vector; Catching Exceptions

Pointers and Pointer-Based Strings

Classes: a Deeper Look; Throwing Exceptions

Operator Overloading; String and Array Objects

Object-Oriented Programming: Polymorphism

Stream Inputoutput: a Deeper Look

File Processing

Standard Library Containers and Iterators

Standard Library Algorithms

Exception Handling: a Deeper Look

Introduction to Custom Templates

Custom Templatized Data Structures

Searching and Sorting

Class String and String Stream Processing

Bits, Characters, C Strings and Structs

Other Topics

C++11 Additional Features

Filters

Exam 11: Object-Oriented Programming: Inheritance

When an object of a derived class is instantiated, the __________ constructor initializes the _________ members.

Protected base class members cannot be accessed by:

Assuming the definition, class BasePlusCommissionEmployee : public CommissionEmployee Which of the following is false?

Which of the following is not one of the disadvantages of using the "copy-and-paste" approach to duplicating code from one class into another class?

Which of the following is most likely a base class of the other three?

Which of the following is not a kind of inheritance in C++?

When deriving a class from a protected base class, the public members of the base class become _________ and the protected members of the base class become __________?

Which of the following statements about inheriting base class constructors is false?

Select the false statement regarding inheritance.

When should base class members be declared protected?

The is-a relationship represents.

Which forms of inheritance are is-a relationships?

Base class constructors and assignment operators:

To declare class subClass a privately derived class of superClass one would write:

From most restrictive to least restrictive, the access modifiers are:

Which of the following is not a good example of a hierarchy likely to be modeled by inheritance?

Introduction to Computers and C++

Introduction to C Programming; Inputoutput and Operators

Introduction to Classes, Objects and Strings

Control Statements, Assignment, and Operators

Control Statements, Logical Operators

Functions and an Introduction to Recursion

Class Templates Array and Vector; Catching Exceptions

Pointers and Pointer-Based Strings

Classes: a Deeper Look; Throwing Exceptions

Operator Overloading; String and Array Objects

Object-Oriented Programming: Polymorphism

Stream Inputoutput: a Deeper Look

File Processing

Standard Library Containers and Iterators

Standard Library Algorithms

Exception Handling: a Deeper Look

Introduction to Custom Templates

Custom Templatized Data Structures

Searching and Sorting

Class String and String Stream Processing

Bits, Characters, C Strings and Structs

Other Topics

C++11 Additional Features

Filters

When an object of a derived class is instantiated, the __ constructor initializes the _ members.

When deriving a class from a protected base class, the public members of the base class become _ and the protected members of the base class become __?