General Questions

Question 1 :

Which of the following statements is incorrect about delegate?


A). Delegates are reference types.
B). Delegates are object oriented.
C). Delegates are type-safe.
D). Delegates serve the same purpose as function pointers in C and pointers to member function operators in C++.
E). Only one method can be called using a delegate.
Answer : Option E

Question 2 :

In which of the following areas are delegates commonly used?

1. Remoting
2. Serialization
3. File Input/Output
4. Multithreading
5. Event handling


A). 1 and 2 only
B). 1 and 5 only
C). 1, 2 and 3 only
D). 4 and 5 only
E). All of the above
Answer : Option D

Question 3 :

Which of the following is the necessary condition for implementing delegates?


A). Class declaration
B). Inheritance
C). Run-time Polymorphism
D). Exceptions
E). Compile-time Polymorphism
Answer : Option A

Question 4 :

Which of the following statements are correct about the delegate declaration given below?

delegate void del(int i);
1. On declaring the delegate a class called del will get created.
2. The signature of del need not be same as the signature of the method that we intend to call using it.
3. The del class will be derived from the MulticastDelegate class.
4. The method that can be called using del should not be a static method.
5. The del class will contain a one-argument constructor and an lnvoke() method.


A). 1, 2 and 3 only
B). 1, 3 and 5 only
C). 2 and 4 only
D). 4 only
E). All of the above
Answer : Option B

Question 5 :

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.


A). 1 and 2 only
B). 1, 2 and 3 only
C). 2, 3 and 4 only
D). All of the above
E). None of the above
Answer : Option C