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Enumerations problems

1. Which of the following statements is true about an enum used in C#.NET?
Options
A. An implicit cast is needed to convert from enum type to an integral type.
B. An enum variable cannot have a public access modifier.
C. An enum variable cannot have a private access modifier.
D. An enum variable can be defined inside a class or a namespace.
E. An enum variable cannot have a protected access modifier.

2. Which of the following statements are correct about enum used in C#.NET?
1. Every enum is derived from an Object class.
2. Every enum is a value type.
3. There does not exist a way to print an element of an enum as a string.
4. Every enum is a reference type.
5. The default underlying datatype of an enum is int.
Options
A. 1, 2, 5
B. 1, 4
C. 3, 5
D. 2, 3, 4

4. Which of the following statements are correct about an enum used inC#.NET?
1. By default the first enumerator has the value equal to the number of elements present in the list.
2. The value of each successive enumerator is decreased by 1.
3. An enumerator contains white space in its name.
4. A variable cannot be assigned to an enum element.
5. Values of enum elements cannot be populated from a database.
Options
A. 1, 2
B. 3, 4
C. 4, 5
D. 1, 4

5. Which of the following statements is correct about the C#.NET code snippet given below?

int a = 10; 
int b = 20; 
int c = 30;
enum color: byte
{
    red = a, 
    green = b,
    blue = c 
}

Options
A. Variables cannot be assigned to enum elements.
B. Variables can be assigned to any one of the enum elements.
C. Variables can be assigned only to the first enum element.
D. Values assigned to enum elements must always be successive values.
E. Values assigned to enum elements must always begin with 0.

6. Which of the following statements are correct about the C#.NET code snippet given below?
```
namespace CuriousTabConsoleApplication
( 
class Sample
{ 
    private enum color : int
    { 
        red, 
        green, 
        blue
    }
    public void fun()
    {
        Console.WriteLine(color.red); 
    }
}
class Program
{ 
    static void Main(string[ ] args)
    { 
        // Use enum color here
    } 
} 
}
```
1. To define a variable of type enum color in Main(), we should use the statement, color c; .
2. enum color being private it cannot be used in Main().
3. We must declare enum color as public to be able to use it outside the class Sample.
4. To define a variable of type enum color in Main(), we should use the statement, Sample.color c; .
5. We must declare private enum color outside the class to be able to use it in Main().
Options
A. 1, 2, 3
B. 2, 3, 4
C. 3, 4
D. 4, 5

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