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.

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.

1, 3

2, 4, 5

3, 5

4 only

Discuss

Answer: (b).2, 4, 5

Q12.

Which of the following CANNOT belong to a C#.NET Namespace?

class

struct

enum

Data

Discuss

Answer: (d).Data

Q13.

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

Nested namespaces are not allowed.

Importing outer namespace imports inner namespace.

Nested namespaces are allowed.

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"?

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

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

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

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();

1, 3

2, 4, 5

1, 3, 5

5 only

Discuss

Answer: (c).1, 3, 5

Q16.

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

System.Process

System.Security

System.Threading

System.xml

Discuss

Answer: (a).System.Process

Q17.

Which is the correct statement about the namespaces in C#.NET?

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

A namespace cannot be tested

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

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?

class

struct

enum

data

Discuss

Answer: (d).data

Q19.

Which among the following is a correct statement about namespace used in C#.NET?

Classes must belong to a namespace, whereas structures need not

All elements of the namespace must to belong to one file

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

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 */
     }
}

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

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

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

All of the mentioned

Discuss

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

Page 2 of 5

Welcome to the Namespaces and Preprocessors MCQs Page

Namespaces and Preprocessors MCQs | Page 2 of 5

Explore more Topics under C# programming

Basics of C# Programming

Data Types,Variables and Operators

Control Instructions

Classes and Objects

Arrays and Strings

Interfaces,Inheritance and Polymorphism

Functions and Subroutines

Indexers and Exception Handling

Console IO and Stream Classes

Delegates and Generics

LINQ

Collection Classes and Mathematical Functions

Miscellaneous Topics

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