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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 1 of 5

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Q1.
If a namespace is present in a library then which of the following is the correct way to use the elements of the namespace?

a.

Add Reference of the namespace.Use the elements of the namespace.

b.

Add Reference of the namespace.Import the namespace.Use the elements of the namespace.

c.

Import the namespace.Use the elements of the namespace.

d.

Copy the library in the same directory as the project that is trying to use it.Use the elements of the namespace.

Discuss
Answer: (b).Add Reference of the namespace.Import the namespace.Use the elements of the namespace.
Q2.
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.Drawing

Discuss
Answer: (a).System.Process
Q3.
Which of the following statments are the correct way to call the method Issue() defined in the code snippet given below? 

namespace College
{
    namespace Lib
    {
        class Book
        {
            public void Issue()
            {
                // Implementation code
            }
        }
        class Journal
        {
            public void Issue()
            {
                // Implementation code
            }
        }
    }
}

1.
College.Lib.Book b = new College.Lib.Book(); 
b.Issue();

2.
Book b = new Book(); 
b.Issue();

3.
using College.Lib; 
Book b = new Book(); 
b.Issue();

4.
using College;
Lib.Book b = new Lib.Book(); 
b.Issue();

5.
using College.Lib.Book; 
Book b = new Book(); 
b.Issue();

a.

1, 3

b.

2, 4

c.

3

d.

4, 5

Discuss
Answer: (a).1, 3
Q4.
Which of the following statements is correct about a namespace in C#.NET?

a.

Namespaces help us to control the visibility of the elements present in it.

b.

A namespace can contain a class but not another namespace.

c.

If not mentioned, then the name 'root' gets assigned to the namespace.

d.

It is necessary to use the using statement to be able to use an element of a namespace.

Discuss
Answer: (a).Namespaces help us to control the visibility of the elements present in it.
Q5.
Which of the following is absolutely neccessary to use a class Point present in namespace Graph stored in library?

a.

Use fully qualified name of the Point class.

b.

Use using statement before using the Point class.

c.

Add Reference of the library before using the Point class.

d.

Use using statement before using the Point class.

Discuss
Answer: (c).Add Reference of the library before using the Point class.
Q6.
If a class called Point is present in namespace n1 as well as in namespace n2, then which of the following is the correct way to use the Point class?

a.

namespace CompSciBitsConsoleApplication
{
class MyProgram
{
static void Main(string[] args)
{
import n1;
Point x = new Point();
x.fun();
import n2;
Point y = new Point();
y.fun();
}
}
}

b.

import n1;
import n2;
namespace CompSciBitsConsoleApplication
{
class MyProgram
{
static void Main(string[] args)
{
n1.Point x = new n1.Point();
x.fun();
n2.Point y = new n2.Point();
y.fun();
}
}
}

c.

namespace CompSciBitsConsoleApplication
{
class MyProgram
{
static void Main(string[] args)
{
using n1;
Point x = new Point();
x.fun();
using n2;
Point y = new Point();
y.fun();
}
}
}

d.

using n1;
using n2;
namespace CompSciBitsConsoleApplication
{
class MyProgram
{
static void Main(string[] args)
{
n1.Point x = new n1.Point();
x.fun();
n2.Point y = new n2.Point();
y.fun();
}
}
}

Discuss
Answer: (d).using n1;
using n2;
namespace CompSciBitsConsoleApplication
{
class MyProgram
{
static void Main(string[] args)
{
n1.Point x = new n1.Point();
x.fun();
n2.Point y = new n2.Point();
y.fun();
}
}
}
Q7.
Which of the followings are NOT a .NET namespace?

1. System.Web
2. System.Process
3. System.Data
4. System.Drawing2D
5. System.Drawing3D

a.

1, 3

b.

2, 4, 5

c.

3, 5

d.

1, 2, 3

Discuss
Answer: (b).2, 4, 5
Q8.
Which of the following statements is correct about namespaces in C#.NET?

a.

Namespaces can be nested only up to level 5.

b.

A namespace cannot be nested.

c.

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

d.

If namespaces are nested, then it is necessary to use using statement while using the elements of the inner namespace.

Discuss
Answer: (c).There is no limit on the number of levels while nesting namespaces.
Q9.
Which of the following is correct way to rewrite the C#.NET code snippet given below? 

using Microsoft.VisualBasic;
using System.Windows.Forms;
MessageBox.Show("Wait for a" + ControlChars.CrLf + "miracle");

a.

using System.Windows.Forms;
using CtrlChars = Microsoft.VisualBasic.ControlChars;
MessageBox.Show("Wait for a" + CrLf + "miracle");

b.

using Microsoft.VisualBasic;
using System.Windows.Forms;
CtrlChars = ControlChars;
MessageBox.Show("Wait for a" + CtrlChars.CrLf + "miracle");

c.

using Microsoft.VisualBasic;
using System.Windows.Forms;
CtrlChars = ControlChars;
MessageBox.Show ("Wait for a" + CrLf + "miracle");

d.

using System.Windows.Forms;
using CtrlChars = Microsoft.VisualBasic.ControlChars;
MessageBox.Show("Wait for a" + CtrlChars.CrLf + "miracle");

Discuss
Answer: (d).using System.Windows.Forms;
using CtrlChars = Microsoft.VisualBasic.ControlChars;
MessageBox.Show("Wait for a" + CtrlChars.CrLf + "miracle");
Q10.
Which of the following statements is correct about the using statement used in C#.NET?

a.

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

b.

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

c.

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

d.

By using using statement it is possible to create an alias for the namespace but not for the namespace element.

Discuss
Answer: (c).A C#.NET source code file can contain any number of using statement.
Page 1 of 5

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