Object Oriented Programming Quiz PDF: Questions and Answers - 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