Question 1

You cannot determine when the garbage collector will execute.

Accepted Answer

A) True 
 B)False

Question 2

Operators should be overloaded to perform actions similar to those that they normally perform on objects of simple types.

Accepted Answer

A) True 
 B)False

Question 3

Which of the following statements is true
Constructors:

Accepted Answer

A)  initialize instance variables 
B)  when overloaded, can have identical argument lists 
C)  when overloaded, are selected by number and types of parameters 
D)  a and c 
A)  initialize instance variables 
B)  when overloaded, can have identical argument lists 
C)  when overloaded, are selected by number and types of parameters 
D)  a and c

Question 4

A class cannot have references to objects of other classes as members.

Accepted Answer

A) True 
 B)False

Question 5

Data members declared as readonly must be initialized in their declaration.

Accepted Answer

A) True 
 B)False

Question 6

C#6] It's common to include in an exception's error message a variable's or property's identifier.This information can help a client-code programmer understand the context in which the exception occurred.Prior to C# 6,you had to hard code these identifiers into your error-message strings.As of C# 6,you can instead use the ________ operator,which returns a string representation of the identifier enclosed in parentheses.

Accepted Answer

A)  valueof 
B)  stringof 
C)  characterof 
D)  nameof 
A)  valueof 
B)  stringof 
C)  characterof 
D)  nameof

Question 7

The compiler will create a default constructor for a class even if you already declared a constructor(s).

Accepted Answer

A) True 
 B)False

Question 8

User-defined classes may be composed of other user-defined classes.

Accepted Answer

A) True 
 B)False

Question 9

displays the variables and methods for all classes in a project.

Accepted Answer

A)  Class View 
B)  Object Browser 
C)  Design View 
D)  None of the above. 
A)  Class View 
B)  Object Browser 
C)  Design View 
D)  None of the above.

Question 10

Which of the following statements is false

Accepted Answer

A)  Extension methods must be defined as static methods in a static class. 
B)  The compiler implicitly passes the object that's used to call the method as the extension method's first argument. This allows you to call an extension method as if it were an instance method of the extended class. 
C)  An extension method's fully qualified name is the name of the class in which the extension method is defined, followed by the name of the method and its argument list. When using the fully qualified method name, you must specify an argument for the first parameter. 
D)  If the type being extended defines an instance method with the same name as your extension method and a compatible signature, the extension method shadows the instance method. 
A)  Extension methods must be defined as static methods in a static class. 
B)  The compiler implicitly passes the object that's used to call the method as the extension method's first argument. This allows you to call an extension method as if it were an instance method of the extended class. 
C)  An extension method's fully qualified name is the name of the class in which the extension method is defined, followed by the name of the method and its argument list. When using the fully qualified method name, you must specify an argument for the first parameter. 
D)  If the type being extended defines an instance method with the same name as your extension method and a compatible signature, the extension method shadows the instance method.

Question 11

Instance variables or methods declared with the modifier are accessible only in that class definition.

Accepted Answer

A)  protected 
B)  static 
C)  private 
D)  None of the above. 
A)  protected 
B)  static 
C)  private 
D)  None of the above.

Question 12

In a method in which a parameter has the same name as an instance variable,using the this reference allows you to refer to ________.

Accepted Answer

A)  the parameter 
B)  the instance variable 
C)  varies depending on the situation 
D)  None of the above 
A)  the parameter 
B)  the instance variable 
C)  varies depending on the situation 
D)  None of the above

Question 13

The classes,variables and methods in a program are displayed in a hierarchical structure in Class View.

Accepted Answer

A) True 
 B)False

Question 14

A class's initializes members of that class.

Accepted Answer

A)  constructor 
B)  utility method 
C)  access modifier 
D)  None of the above. 
A)  constructor 
B)  utility method 
C)  access modifier 
D)  None of the above.

Question 15

The garbage collector looks for objects with no values.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following is false

Accepted Answer

A)  A static method or property must be used to access private static instance variables. 
B)  A static method has no this reference. 
C)  A static method can be accessed even when no objects of its class have been instantiated. 
D)  A static method can call instance methods directly. 
A)  A static method or property must be used to access private static instance variables. 
B)  A static method has no this reference. 
C)  A static method can be accessed even when no objects of its class have been instantiated. 
D)  A static method can call instance methods directly.

Question 17

Member access modifiers are used to limit how much memory is available for class members.

Accepted Answer

A) True 
 B)False

Question 18

When should a program explicitly use the this reference

Accepted Answer

A)  accessing a private variable 
B)  accessing a public variable 
C)  accessing a local variable 
D)  accessing a field that is shadowed by a local variable 
A)  accessing a private variable 
B)  accessing a public variable 
C)  accessing a local variable 
D)  accessing a field that is shadowed by a local variable

Question 19

An instance of a user-defined type is called a(n)

Accepted Answer

A)  class 
B)  interface 
C)  object 
D)  None of the above. 
A)  class 
B)  interface 
C)  object 
D)  None of the above.

Exam 10: Classes and Objects: A Deeper Look

You cannot determine when the garbage collector will execute.

Operators should be overloaded to perform actions similar to those that they normally perform on objects of simple types.

Which of the following statements is true Constructors:

A class cannot have references to objects of other classes as members.

Data members declared as readonly must be initialized in their declaration.

The compiler will create a default constructor for a class even if you already declared a constructor(s).

User-defined classes may be composed of other user-defined classes.

displays the variables and methods for all classes in a project.

Which of the following statements is false

Instance variables or methods declared with the modifier are accessible only in that class definition.

In a method in which a parameter has the same name as an instance variable,using the this reference allows you to refer to ________.

The classes,variables and methods in a program are displayed in a hierarchical structure in Class View.

A class's initializes members of that class.

The garbage collector looks for objects with no values.

Which of the following is false

Member access modifiers are used to limit how much memory is available for class members.

When should a program explicitly use the this reference

An instance of a user-defined type is called a(n)

Introduction to Computers, the Internet and Visual C#

Dive Into Visual Studio Community

Introduction to C# Apps

Introduction to Classes,Objects,Methods and Strings

Control Statements: Part 1

Control Statements: Part 2

Methods: a Deeper Look

Arrays;Introduction to Exception Handling

Introduction to Linq and Generic Collections

Object-Oriented Programming: Inheritance

Object-Oriented Programming: Polymorphism

Exception Handling: A Deeper Look

GUI With Windows Forms: Part 1

GUI With Windows Forms: Part 2

Strings,Characters and Regular Expressions

Files and Streams

Searching and Sorting

Data Structures

Generics

Collections

Databases and LING

Asynchronous Programming With Async and Await

XML

GUI With Windows Presentation Foundation

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