Object Oriented Programming Notes Questions with Answers PDF Download – Test 59

MCQ 291: Multiple inheritance leaves room for a derived class to have:

1. dynamic members
2. private members
3. public members
4. ambiguous members

MCQ 292: A structure can:

1. A struct can contain properties.
2. A struct can contain constructors.
3. A struct can contain protected data members.
4. Both a and b

MCQ 293: An object that is implementing IDisposable is passed to your class as an argument. Should you wrap the element in a using statement:

1. Yes, otherwise a memory leak could happen
2. No, you should call Close on the object.
3. No, you should use a try/finally statement and call Dispose yourself.
4. No, the calling method should use a using statement.

MCQ 294: The advantage of using 2D jagged array over 2D rectangular array is:

1. Easy initialization of elements
2. that it allows unlimited elements as well as rows which had ?0? or are empty in nature
3. both a and b
4. easy implementation

MCQ 295: Select an output for the following code
static void Main(string[] args) { int a = 5; fun1 (ref a); Console.WriteLine(a); Console.ReadLine(); } static void fun1(ref int a) { a = a * a; } :

1. 5
2. 0
3. 20
4. 25