C# Programming Practice Test 9

1. Which of the following is not a namespace in the .NET Framework Class Library?

System.Security

System.Threading

System.xml

System.Process

2. Which among the following is the correct statement about the using statement used in C#.NET?

By using 'using' statement it's possible to create an alias for the namespace but not for the namespace element

Using statement can be placed anywhere in the C#.NET source code file

A C#.NET source code file consists of any number of using statement

It is permitted to define a member at namespace level using alias

3. What does the following method specify?

   public static WebRequest Create(string requestUriString)

The object will be an instance of the class that inherits WebRequest

The object returned will implement the protocol specified by the prefix of the URI

Creates a WebRequest object for the URI specified by the string passed by requestUriString

All of the mentioned

4. Which of these data types can be used for a method having a return statement in it?

void

int

all of the mentioned

float

5. What is synchronization in reference to a thread?

It's a process of handling situations when two or more threads need access to a shared resource

It's a process by which many threads are able to access the same shared resource simultaneously

It's a method that allows too many threads to access any information they require

It's a process by which a method is able to access many different threads simultaneously

6. Which of these methods return a largest whole number less than or equal to variable X?

double Max(double X)

double Ciel(double X)

double Floor(double X)

double Min(double X)

7. Choose the correct statements for the following C# code?

 public System.Collections.IEnumerator GetEnumerator()
 {
     foreach (char ch in chrs)
     yield return ch;
 }

The yield return statement returns the next object in the collection, which in this case is the next character in chrs

All of the mentioned

Implements the GetEnumerator() method defined by IEnumerable

Definition of iterator for MyClass

8. Which of these method returns a smallest whole number greater than or equal to variable X?

double Min(double X)

double Max(double X)

double Floor(double X)

double Ciel(double X)

9. What will be the output of the following C# code snippet?

class equality 
{
    int x;
    int y;
    boolean isequal()
    {
        return(x == y);  
    } 
}    
class Output 
{
    public static void main(String args[]) 
    {
       equality obj = new equality();
       obj.x = 5;
       obj.y = 5;
       Console.WriteLine(obj.isequal());
    } 
}

false

true

10. What will be the output of the following C# code snippet?

class Program
{
    static void Main(string[] args)
    {
        double x = 3.14;  
        int y = (int) Math.Abs(x);
        Console.WriteLine(y);
    }
}

3.1

3.0