Question 31

The statement Stack objectStack = new Stack(); indicates that object Stack stores _______ .

Object

Stack

integers

strings

Question 32

Attempting to invoke a derived-class-only method through a base-class variable is an error.

True

False

Question 33

Which of the following property specify the duration of a Timer in System.Timers.Timer

Events

Interval

Duration

Enabled

Question 34

In the System.Media.SoundPlayer class what method is used to load a sound using a new thread?

Load

LoadAsync

Play

Stop

Question 35

When should a program explicitly use the this reference?

accessing a private variable

accessing a public variable

accessing a local variable

accessing a field that is shadowed by a local variable

Question 36

The .NET languages have which of the following in common?

Syntax

Keywords

Base Class Library

No answer text provided.

Question 37

Which of the following classes is not in the System.IO namespace?

BinaryReader

FileInfo

FileLoad

StreamWriter

Question 38

Why does a syntax error occur when trying to declare a variable called 'lock'?

'lock' is immutable

'lock' is mutable

'lock' is a reserved keyword

'lock' is a system attribute

Question 39

This keyword is used to extend or modify the abstract or virtual implementation of an inherited method, property, indexer, or event.

extend

replace

override

sealed

Question 40

Which of the following is an appropriate declaration of an abstract method?

public abstract int GetScore() { }

public abstract int GetScore();

public int GetScore() as abstract;

none of the above