Practicing and exploring

Test your knowledge and understanding by answering some questions, getting some hands-on practice, and exploring this chapter’s topics with more in-depth research.

Exercise 6.1 – Test your knowledge

Answer the following questions:

1. What is a delegate?
2. What is an event?
3. How are a base class and a derived class related, and how can the derived class access the base class?
4. What is the difference between is and as operators?
5. Which keyword is used to prevent a class from being derived from or a method from being further overridden?
6. Which keyword is used to prevent a class from being instantiated with the new keyword?
7. Which keyword is used to allow a member to be overridden?
8. What’s the difference between a destructor and a deconstruct method?
9. What are the signatures of the constructors that all exceptions should have?
10. What is an extension method, and how do you define one...