C# Namespace Aptitude Questions and Answers

1) There are following namespaces are given below, which is correct about "using" statement in C#.NET?

2) We created a library, in which a namespace that contains classes, then what is the correct way to use classes present in a namespace?

Add reference of the library then use classes present in the namespace.
Add reference of the library and include namespace into the project and then we can use classes present in the namespace.
Include namespace in our project then use classes present in the namespace.
We need to install namespace into GAC and then we can use classes present in the namespace.

Answer & Explanation

3) Is it possible that we can use multiple using statements in a program in C#.NET?

Yes
No

Answer & Explanation

4) What is the correct output of the given code snippet?

using System;

namespace my_namespace
{
    class sample
    { 
        public static void sayHello()
        {
            Console.WriteLine("Hello");
        }
    }

    class program
    {
        static void Main(string[] args)
        {
            sample.sayHello();
        }
    }
}

Answer & Explanation

5) How many classes can be created in a namespace?

Answer & Explanation

C# Namespace Aptitude Questions and Answers | Set 3