Delegates - General Questions

With which of the following can the ref keyword be used?

1 Static data

2 Instance data

3 Static function/subroutine

4 Instance function/subroutine

Suppose a Generic class called SortObjects is to be made capable of sorting objects of any type (Integer, Single, Byte etc.). Which of the following programming constructs should be used to implement the comparision function?

Which of the following statements is incorrect about a delegate?

Suppose on pushing a button an object is to be notified, but it is not known until runtime which object should be notified. Which of the following programming constructs should be used to implement this idea?

Which of the following are the correct ways to declare a delegate for calling the function func() defined in the sample class given below?

class Sample
{
public int func(int i, Single j)
{
/* Add code here. */
}
}

Which of the following statements are correct about delegates?

Which of the following statements are correct about delegates?

1 Delegates are not type-safe.

2 Delegate is a user-defined type.

3 Only one method can be bound with one delegate object.

4 Delegates can be used to implement callback notification.

5 Delegates permit execution of a method on a secondary thread in an asynchronous manner.

Which of the following statements are correct about a delegate?

1 Inheritance is a prerequisite for using delegates.

2 Delegates are type-safe.

3 Delegates provide wrappers for function pointers.

4 The declaration of a delegate must match the signature of the method that we intend to call using it.

5 Functions called using delegates are always late-bound.