Question 1

Any subclass must include the ____________________ keyword to indicate the class from which it inherits.

Accepted Answer

The answer of Any subclass must include the ____________________ keyword...

Question 2

When a class is instantiated into an object,a special procedure in the instantiated class called a(n)____________________ is executed.

Accepted Answer

The answer of When a class is instantiated into an...

Question 3

MATCHING
Identify the letter of the choice that best matches the phrase or definition.
-A benefit of using these is that the variables defined in one can be hidden from processing in others
A)classes
B)TabIndex
C)encapsulation
D)SelectedIndex
E)subclass
F)Overridable
G)object
H)three-tier
I)StreamWriter
J)inheritance

Accepted Answer

The answer of MATCHING
Identify the letter of the choice that...

Question 4

To instantiate an object,you can use the ____________________ statement.

Accepted Answer

The answer of To instantiate an object,you can use the...

Question 5

A variable that is declared with ____________________ access cannot be referenced by coding in any other class within the program.

Accepted Answer

The answer of A variable that is declared with ____________________...

Question 6

When a function name in a subclass is preceded by the ____________________ keyword,the function in the subclass will override a function with the same name in the base class when the function in the subclass is called.

Accepted Answer

The answer of When a function name in a subclass...

Question 7

In a(n)____________________ text file,fields in a record are separated by commas.

Accepted Answer

The answer of In a(n)____________________ text file,fields in a record...

Question 8

The ____________________ procedure is used to close a StreamWriter file.

Accepted Answer

The answer of The ____________________ procedure is used to close...

Question 9

MATCHING
Identify the letter of the choice that best matches the phrase or definition.
-You must use multiple classes to implement this kind of program structure
A)classes
B)TabIndex
C)encapsulation
D)SelectedIndex
E)subclass
F)Overridable
G)object
H)three-tier
I)StreamWriter
J)inheritance

Accepted Answer

The answer of MATCHING
Identify the letter of the choice that...

Question 10

____________________ allows one class to inherit attributes and procedures from another class.

Accepted Answer

The answer of ____________________ allows one class to inherit attributes...

Question 11

MATCHING
Identify the letter of the choice that best matches the phrase or definition.
-A class acts as a template for this
A)classes
B)TabIndex
C)encapsulation
D)SelectedIndex
E)subclass
F)Overridable
G)object
H)three-tier
I)StreamWriter
J)inheritance

Accepted Answer

A class acts as a template for an object, which is an instance of the class.

Question 12

A(n)____________________ object can be used to write a stream of text to a file.

Accepted Answer

The answer of A(n)____________________ object can be used to write...

Question 13

____________________ is the concept of separating processing and hiding data within specific classes.

Accepted Answer

The answer of ____________________ is the concept of separating processing...

Question 14

The persistence tier,sometimes called the _________________ tier,contains the classes required to read and write data from permanent storage.

Accepted Answer

The answer of The persistence tier,sometimes called the _________________ tier,contains...

Question 15

____________________ the text means writing the next record in the file following the last record currently in the file.

Accepted Answer

The answer of ____________________ the text means writing the next...

Question 16

The keyword ____________________ in a base class means that a subclass can contain a procedure with the same procedure name.

Accepted Answer

The answer of The keyword ____________________ in a base class...

Question 17

MATCHING
Identify the letter of the choice that best matches the phrase or definition.
-If this property is less than 0,then a selection has not been made
A)classes
B)TabIndex
C)encapsulation
D)SelectedIndex
E)subclass
F)Overridable
G)object
H)three-tier
I)StreamWriter
J)inheritance

Accepted Answer

SelectedIndex is a property in programming that determines which item in a list or dropdown menu has been selected. If this property has a value of less than zero, it means that no item has been selected yet.

Note: The other choices are also programming terms, but they do not directly relate to the given phrase or definition.

Question 18

MATCHING
Identify the letter of the choice that best matches the phrase or definition.
-A major contributor to reliable and robust programs
A)classes
B)TabIndex
C)encapsulation
D)SelectedIndex
E)subclass
F)Overridable
G)object
H)three-tier
I)StreamWriter
J)inheritance

Accepted Answer

Encapsulation is a technique of making the fields in a class private and providing access to the fields via public methods. This technique helps in making the programming robust and more secure.

Answer: J 
 Inheritance is a process of creating new classes from an existing class. The new classes inherit the properties and behavior of the existing class, thus allowing the programmer to reuse code and create new classes quickly and easily. This is another key technique for creating reliable and robust programs.

Answer: G 
 An object is an instance of a class. Objects are used to represent real-world entities, abstract concepts or systems. Object-oriented programming is based on the use of objects and their interactions to create programs. So, objects are also a major contributor to reliable and robust programs.

Question 19

Variables in a base class that are declared with ____________________ access can be referenced only by subclasses but not by outside classes.

Accepted Answer

The answer of Variables in a base class that are...

Question 20

When using inheritance,the class which inherits attributes from another class is called the ____________________.

Accepted Answer

The answer of When using inheritance,the class which inherits attributes...

Quiz 11: Multiple Classes and Inheritance