Question 1

Use the ____ keyword to mark a class so that it can be used only as the base class from which other classes can be derived.

Accepted Answer

A)   base
B)   interface
C)   virtual
D)   abstractE) B) and C)
F) A) and D)

Question 2

Variables declared as dynamic ____.

Accepted Answer

A)   require boxing or casting to identify the actual data type
B)   can hold any type of value
C)   stores data as strings
D)   must have an associated data type added as part of the declarationE) All of the above
F) C) and D)

Question 3

____ classes cannot be instantiated. ____ classes cannot be inherited.

Accepted Answer

A)   Abstract, Sealed
B)   Sealed. Abstract
C)   Abstract, Abstract
D)   Sealed, SealedE) B) and C)
F) A) and D)

Question 4

An overloaded method must have exactly the same signature as the method it is overriding.

Accepted Answer

A) True 
 B)False

Question 5

If you do not want subclasses to be able to provide new implementation details, you can add the keyword ____ to methods. Doing so keeps derived classes from being able to override the method.

Accepted Answer

A)   partial
B)   abstract
C)   virtual
D)   sealedE) All of the above
F) None of the above

Question 6

public​ class A : B, C
Which of the following statements is TRUE regarding the above declaration?

Accepted Answer

A)   ​A is the base class.
B)   ​B is the derived class.
C)   ​C is an interface.
D)   ​All of the above are correct.E) All of the above
F) C) and D)

Question 7

With C#, you have single inheritance, but a class can ____________ multiple interfaces.

Accepted Answer

The answer of With C#, you have single inheritance, but...

Question 8

Components are implemented in C# through ____.

Accepted Answer

A)   classes
B)   encapsulation
C)   namespaces
D)   packagesE) All of the above
F) A) and B)

Question 9

Partial classes enable a class to be split into two or more files and combined when the application is compiled and ran.

Accepted Answer

A) True 
 B)False

Question 10

Both var and ____________ enables developers to not associate a specific data type to the actual data when the memory declaration for the variable is written.

Accepted Answer

The answer of Both var and ____________ enables developers to...

Question 11

To override a method, the base method may include any of the following keywords, EXCEPT ____.

Accepted Answer

A)   virtual
B)   abstract
C)   interface
D)   overrideE) A) and B)
F) A) and C)

Question 12

____________ allows you to create a general class and then define specialized classes that have access to the members of the general class.

Accepted Answer

The answer of ____________ allows you to create a general...

Question 13

When you have a method that has the same name in both the base and derived classes, use the keyword super to refer to the method in the base class.

Accepted Answer

A) True 
 B)False

Question 14

Generics enable you to identify where data will change in the code segment by putting a placeholder in the code for the type parameters.

Accepted Answer

A) True 
 B)False

Question 15

Software components often take the form of classes or collections of methods.

Accepted Answer

A) True 
 B)False

Question 16

The base default constructor is called by ____.

Accepted Answer

A)   adding base( ) :  between the constructor heading and the opening curly brace
B)   typing base( ) : as the first executable statement in the derived constructor
C)   adding className( ) :  between the constructor heading and the opening curly brace
D)   typing base( ) : as the first executable statement in the Main( )  methodE) A) and D)
F) C) and D)

Question 17

A stack represents a simple ____________ collection.

Accepted Answer

last-in-fi...

Question 18

You can think of an interface as a class that is totally ____________.

Accepted Answer

The answer of You can think of an interface as...

Question 19

If a class implements more than one ____________, they all appear on the class definition line separated by commas.

Accepted Answer

The answer of If a class implements more than one...

Question 20

Multiple inheritance is not possible in C#; ____ provides the closest work around to this because a class can implement multiple ____.

Accepted Answer

A)   interfaces
B)   abstract classes
C)   virtual classes
D)   componentsE) None of the above
F) All of the above

Exam 11: Advanced Object-Oriented Programming Features

Components are implemented in C# through ____.

Correct AnswerverifiedShow Answer

You can think of an interface as a class that is totally ____________.

Correct AnswerverifiedShow Answer

Variables declared as dynamic ____.

Correct AnswerverifiedShow Answer

Both var and ____________ enables developers to not associate a specific data type to the actual data when the memory declaration for the variable is written.

Correct AnswerverifiedShow Answer

If a class implements more than one ____________, they all appear on the class definition line separated by commas.

Correct AnswerverifiedShow Answer

When you have a method that has the same name in both the base and derived classes, use the keyword super to refer to the method in the base class.

Correct AnswerverifiedShow Answer

Partial classes enable a class to be split into two or more files and combined when the application is compiled and ran.

Correct AnswerverifiedShow Answer

Software components often take the form of classes or collections of methods.

Correct AnswerverifiedShow Answer

Generics enable you to identify where data will change in the code segment by putting a placeholder in the code for the type parameters.

Correct AnswerverifiedShow Answer

With C#, you have single inheritance, but a class can ____________ multiple interfaces.

Correct AnswerverifiedShow Answer

A stack represents a simple ____________ collection.

Correct Answerverifiedlast-in-fi...View AnswerShow Answer

The base default constructor is called by ____.

Correct AnswerverifiedShow Answer

____________ allows you to create a general class and then define specialized classes that have access to the members of the general class.

Correct AnswerverifiedShow Answer

If you do not want subclasses to be able to provide new implementation details, you can add the keyword ____ to methods. Doing so keeps derived classes from being able to override the method.

Correct AnswerverifiedShow Answer

public​ class A : B, C Which of the following statements is TRUE regarding the above declaration?

Correct AnswerverifiedShow Answer

An overloaded method must have exactly the same signature as the method it is overriding.

Correct AnswerverifiedShow Answer

____ classes cannot be instantiated. ____ classes cannot be inherited.

Correct AnswerverifiedShow Answer

Multiple inheritance is not possible in C#; ____ provides the closest work around to this because a class can implement multiple ____.

Correct AnswerverifiedShow Answer

To override a method, the base method may include any of the following keywords, EXCEPT ____.

Correct AnswerverifiedShow Answer

Use the ____ keyword to mark a class so that it can be used only as the base class from which other classes can be derived.

Correct AnswerverifiedShow Answer

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last-in-fi...
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public class A : B, C Which of the following statements is TRUE regarding the above declaration?

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classes cannot be instantiated. classes cannot be inherited.

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Multiple inheritance is not possible in C#; provides the closest work around to this because a class can implement multiple .

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