Polymorphism - General Questions (1)

Which of the following are necessary for Run-time Polymorphism?

1 The overridden base method must be virtual, abstract or override.

2 Both the override method and the virtual method must have the same access level modifier.

3 An override declaration can change the accessibility of the virtual method.

4 An abstract inherited property cannot be overridden in a derived class.

5 An abstract method is implicitly a virtual method.

Which of the following statements is  correct?

Which of the following can be declared as a virtual in a class?

1 Methods

2 Properties

3 Events

4 Fields

5 Static fields

In order for an instance of a derived class to completely take over a class member from a base class, the base class has to declare that member as

Which of the following modifier is used when a virtual method is redefined by a derived class?

Which of the following operators cannot be overloaded?

1 true

2 false

3 new

4 ~

5 sizeof

Which of the following statements is  correct?

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

public class Sample
{
public int x;
public virtual void fun()
{ }
}
public class DerivedSample : Sample
{
new public void fun()
{ }
}