ExamAdept

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.

Answer: C

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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.

Answer: A

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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
            }
        }
    }
}

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();

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

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

A:

1, 3

B:

2, 4

C:

3

D:

4, 5

Answer: A

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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

Answer: A

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📖

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.

Answer: B

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📖

Questions for: Namespaces