20. If a is an array of 5 integers then which of the following is the correct way to increase its size to 10 elements?20.If a is an array of 5 integers then which of the following is the correct way to increase its size to 10 elements?

A. int[] a = new int[5];
    int[] a = new int[10];
B. int[] a = int[5];
    int[] a = int[10];
C. int[] a = new int[5];
    a.Length = 10 ;
D. int[] a = new int[5];
    a = new int[10];
E. int[] a = new int[5];
   a.GetUpperBound(10);
Answer: Option D

19. Which one of the following statements is correct?

A. Array elements can be of integer type only.
B. The rank of an Array is the total number of elements it can contain.
C. The length of an Array is the number of dimensions in the Array.
D. The default value of numeric array elements is zero.
E. The Array elements are guaranteed to be sorted.
Answer: Option D

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

 int[] a = {11, 3, 5, 9, 4};
1.The array elements are created on the stack.
2.Refernce a is created on the stack.
3.The array elements are created on the heap.
4.On declaring the array a new array class is created which is derived fromSystem.Array Class.
5.Whether the array elements are stored in the stack or heap depends upon the size of the array.
A. 1, 2
B. 2, 3, 4
C. 2, 3, 5
D. 4, 5
E. None of these
Answer: Option B

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

int[ , ] intMyArr = {{7, 1, 3}, {2, 9, 6}};
1.intMyArr represents rectangular array of 2 rows and 3 columns.
2.intMyArr.GetUpperBound(1) will yield 2.
3.intMyArr.Length will yield 24.
4.intMyArr represents 1-D array of 5 integers.
5.intMyArr.GetUpperBound(0) will yield 2.
A. 1, 2
B. 2, 3
C. 2, 5
D. 1, 4
E.  3, 4
Answer: Option A

16. Which of the following statements is correct about classes and objects in C#.NET?

A. Class is a value type.
B. Since objects are typically big in size, they are created on the stack.
C. Objects of smaller size are created on the heap.
D. Smaller objects that get created on the stack can be given names.
E. Objects are always nameless.
Answer: Option E

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

namespace IndiabixConsoleApplication
{
    class Sample
    {
        int i, j;
        public void SetData(int ii, int jj)
        {
            this.i = ii;
            this.j = jj
        }
    }
    class MyProgram
    {
        static void Main(string[ ] args)
        {
            Sample s1 = new Sample();
            s1.SetData(10, 2);
            Sample s2 = new Sample();
            s2.SetData(5, 10);
        }
    }
}
A.The code will not compile since we cannot explicitly use this.
B.Using this in this program is necessary to properly set the values in the object.
C.The call to SetData() is wrong since we have not explicitly passed the thisreference to it.
D.The definition of SetData() is wrong since we have not explicitly collected the this reference.
E.Contents of this will be different during each call to SetData().
Answer: Option E

14. Which of the following statements are correct about objects of a user-defined class called Sample?

1.All objects of Sample class will always have exactly same data.
2.Objects of Sample class may have same or different data.
3.Whether objects of Sample class will have same or different data depends upon a Project Setting made in Visual Studio.NET.
4.Conceptually, each object of Sample class will have instance data and instance member functions of the Sample class.
5.All objects of Sample class will share one copy of member functions.
A.1, 3
B.2, 4
C.4, 5
D.3, 5
E.None of these
Answer: Option C