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Welcome to the Namespaces and Preprocessors MCQs Page

Dive deep into the fascinating world of Namespaces and Preprocessors with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Namespaces and Preprocessors, a crucial aspect of C# programming. In this section, you will encounter a diverse range of MCQs that cover various aspects of Namespaces and Preprocessors, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within C# programming.

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Check out the MCQs below to embark on an enriching journey through Namespaces and Preprocessors. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of C# programming.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Namespaces and Preprocessors. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Namespaces and Preprocessors MCQs | Page 2 of 5

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Q11.
Which of the following statements are correct about a namespace used in C#.NET?

1. Classes must belong to a namespace, whereas structures need not.
2. Every class, struct, enum, delegate and interlace has to belong to some or the other namespace.
3. All elements of the namespace have to belong to one file.
4. If not mentioned, a namespace takes the name of the current project.
5. The namespace should be imported to be able to use the elements in it.

a.

1, 3

b.

2, 4, 5

c.

3, 5

d.

4 only

Discuss
Answer: (b).2, 4, 5
Q12.
Which of the following CANNOT belong to a C#.NET Namespace?

a.

class

b.

struct

c.

enum

d.

Data

Discuss
Answer: (d).Data
Q13.
Which of the following statements is correct about a namespace used in C#.NET?

a.

Nested namespaces are not allowed.

b.

Importing outer namespace imports inner namespace.

c.

Nested namespaces are allowed.

d.

If nested, the namespaces cannot be split across files.

Discuss
Answer: (c).Nested namespaces are allowed.
Q14.
Which of the following C#.NET code snippets will correctly print "Hello C#.NET"?

a.

import System;
namespace CompSciBitsConsoleApplication
{
class MyProgram
{
static void Main(string[] args)
{
Console.WriteLine("Hello C#.NET");
}
}
}

b.

using System;
namespace CompSciBitsConsoleApplication
{
class MyProgram
{
static void Main(string[ ] args)
{
WriteLine("Hello C#.NET");
}
}
}

c.

using System.Console;
namespace CompSciBitsConsoleApplication
{
class MyProgram
{
static void Main (string[ ] args)
{
WriteLine("Hello C#.NET");
}
}
}

d.

using System;
namespace CompSciBitsConsoleApplication
{
class MyProgram
{
static void Main(string[] args)
{
Console.WriteLine("Hello C#.NET");
}
}
}

Discuss
Answer: (d).using System;
namespace CompSciBitsConsoleApplication
{
class MyProgram
{
static void Main(string[] args)
{
Console.WriteLine("Hello C#.NET");
}
}
}
Q15.
If ListBox is class present in System.Windows.Forms namespace, then which of the following statements are the correct way to create an object of ListBox Class? 

1.
using System.Windows.Forms; 
ListBox lb = new ListBox();

2.
using LBControl = System.Windows.Forms;
LBControl lb = new LBControl();

3.
System.Windows.Forms.ListBox lb = new System.Windows.Forms.ListBox();

4.
using LBControl lb = new System.Windows.Forms.ListBox;

5.
using LBControl = System.Windows.Forms.ListBox; 
LBControl lb = new LBControl();

a.

1, 3

b.

2, 4, 5

c.

1, 3, 5

d.

5 only

Discuss
Answer: (c).1, 3, 5
Q16.
Which of the following is not a namespace in the .NET Framework Class Library?

a.

System.Process

b.

System.Security

c.

System.Threading

d.

System.xml

Discuss
Answer: (a).System.Process
Q17.
Which is the correct statement about the namespaces in C#.NET?

a.

Nesting of namespaces is permitted, provided all the inner namespaces are declared in the same file

b.

A namespace cannot be tested

c.

There is no limit on the number of levels while nesting namespaces

d.

All of the mentioned

Discuss
Answer: (c).There is no limit on the number of levels while nesting namespaces
Q18.
Which among the following does not belong to the C#.NET namespace?

a.

class

b.

struct

c.

enum

d.

data

Discuss
Answer: (d).data
Q19.
Which among the following is a correct statement about namespace used in C#.NET?

a.

Classes must belong to a namespace, whereas structures need not

b.

All elements of the namespace must to belong to one file

c.

If not mentioned, a namespace takes the name of the current project

d.

All of the mentioned

Discuss
Answer: (c).If not mentioned, a namespace takes the name of the current project
Q20.
Which among the given is not a correct way to call the method Issue() defined in the code snippet given below? 
class Book
{
    public void issue()
    {
      /* code */
    }
}
class Journel
{
     public void issue()
     {
         /* code */
     }
}

a.

College.Lib.Book b = new College.Lib.Book();
b.issue();

b.

Book b = new Book();
b.issue();

c.

using College.Lib;
Book b = new Book();
b.issue();

d.

All of the mentioned

Discuss
Answer: (b).Book b = new Book();
b.issue();
Page 2 of 5

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